{"api_version":"1","generated_at":"2026-10-24T08:57:04+00:00","cve":"CVE-2026-78691","urls":{"html":"https://cve.report/CVE-2026-78691","api":"https://cve.report/api/cve/CVE-2026-78691.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-78691","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-78691"},"summary":{"title":"Unescaped backslash allows LIKE wildcard injection in AshSql string search","description":"Improper Neutralization of Special Elements in Data Query Logic vulnerability in ash-project ash_sql allows a user who supplies a search term to contains/2, string_starts_with/2, or string_ends_with/2 to inject live SQL LIKE wildcards, turning a literal substring search into an attacker-controlled pattern match.\n\nThe escape helpers in AshSql.Expr prefix % and _ with a backslash but never escape a backslash already present in the input. 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EEF","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"78691","cve":"CVE-2026-78691","epss":"0.001380000","percentile":"0.034900000","score_date":"2026-09-03","updated_at":"2026-09-04 00:08:06"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-78691","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-08-31T14:57:20.454917Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-08-31T14:57:41.423Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"references":[{"tags":["exploit"],"url":"https://github.com/ash-project/ash_sql/security/advisories/GHSA-5jgp-7mhc-6qqh"}],"title":"CISA ADP 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application must pass untrusted input as the search term of <code>contains/2</code>, <code>string_starts_with/2</code>, or <code>string_ends_with/2</code> (for example a user-controlled substring search).</p>"},{"base64":false,"type":"text/markdown","value":"An application must pass untrusted input as the search term of `contains/2`, `string_starts_with/2`, or `string_ends_with/2` (for example a user-controlled substring search)."}],"value":"An application must pass untrusted input as the search term of contains/2, string_starts_with/2, or string_ends_with/2 (for example a user-controlled substring search)."}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:ash-project:ash_sql:*:*:*:*:*:*:*:*","versionEndExcluding":"0.7.1","versionStartIncluding":"0.1.1-rc.10","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"AND"}],"credits":[{"lang":"en","type":"finder","value":"Peter Ullrich"},{"lang":"en","type":"reporter","value":"Peter Ullrich"},{"lang":"en","type":"remediation developer","value":"Zach Daniel / Ash Project"},{"lang":"en","type":"coordinator","value":"Jonatan Männchen / EEF"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Improper Neutralization of Special Elements in Data Query Logic vulnerability in ash-project ash_sql allows a user who supplies a search term to <code>contains/2</code>, <code>string_starts_with/2</code>, or <code>string_ends_with/2</code> to inject live SQL <code>LIKE</code> wildcards, turning a literal substring search into an attacker-controlled pattern match.</p>\n<p>The escape helpers in <code>AshSql.Expr</code> prefix <code>%</code> and <code>_</code> with a backslash but never escape a backslash already present in the input. Because backslash is the default <code>LIKE</code> escape character, the escaping defeats itself: the input <code>\\%</code> becomes the pattern fragment <code>\\\\%</code>, where <code>\\\\</code> is a literal backslash and the attacker's <code>%</code> remains a live wildcard. The search value stays parameterized, so this is confined to the LIKE pattern grammar rather than full SQL. An attacker can widen matches to probe values, slip past a negated <code>contains(...)</code> guard, or crash the query with a trailing lone backslash.</p>\n<p>This issue affects ash_sql: from 0.1.1-rc.10 before 0.7.1.</p>"},{"base64":false,"type":"text/markdown","value":"Improper Neutralization of Special Elements in Data Query Logic vulnerability in ash-project ash_sql allows a user who supplies a search term to `contains/2`, `string_starts_with/2`, or `string_ends_with/2` to inject live SQL `LIKE` wildcards, turning a literal substring search into an attacker-controlled pattern match.\n\nThe escape helpers in `AshSql.Expr` prefix `%` and `_` with a backslash but never escape a backslash already present in the input. Because backslash is the default `LIKE` escape character, the escaping defeats itself: the input `\\%` becomes the pattern fragment `\\\\%`, where `\\\\` is a literal backslash and the attacker's `%` remains a live wildcard. The search value stays parameterized, so this is confined to the LIKE pattern grammar rather than full SQL. An attacker can widen matches to probe values, slip past a negated `contains(...)` guard, or crash the query with a trailing lone backslash.\n\nThis issue affects ash_sql: from 0.1.1-rc.10 before 0.7.1."}],"value":"Improper Neutralization of Special Elements in Data Query Logic vulnerability in ash-project ash_sql allows a user who supplies a search term to contains/2, string_starts_with/2, or string_ends_with/2 to inject live SQL LIKE wildcards, turning a literal substring search into an attacker-controlled pattern match.\n\nThe escape helpers in AshSql.Expr prefix % and _ with a backslash but never escape a backslash already present in the input. Because backslash is the default LIKE escape character, the escaping defeats itself: the input \\% becomes the pattern fragment \\\\%, where \\\\ is a literal backslash and the attacker's % remains a live wildcard. The search value stays parameterized, so this is confined to the LIKE pattern grammar rather than full SQL. An attacker can widen matches to probe values, slip past a negated contains(...) guard, or crash the query with a trailing lone backslash.\n\nThis issue affects ash_sql: from 0.1.1-rc.10 before 0.7.1."}],"impacts":[{"capecId":"CAPEC-116","descriptions":[{"lang":"en","value":"CAPEC-116 Excavation"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":2.1,"baseSeverity":"LOW","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-943","description":"CWE-943 Improper Neutralization of Special Elements in Data Query Logic","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-30T11:55:20.331Z","orgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","shortName":"EEF"},"references":[{"tags":["vendor-advisory","related"],"url":"https://github.com/ash-project/ash_sql/security/advisories/GHSA-5jgp-7mhc-6qqh"},{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-78691.html"},{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-78691"},{"tags":["patch"],"url":"https://github.com/ash-project/ash_sql/commit/d95c55c64b1b42cc2fd30211a4913f3145156cd4"}],"source":{"discovery":"EXTERNAL"},"title":"Unescaped backslash allows LIKE wildcard injection in AshSql string search"}},"cveMetadata":{"assignerOrgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","assignerShortName":"EEF","cveId":"CVE-2026-78691","datePublished":"2026-08-30T11:55:20.331Z","dateReserved":"2026-08-30T05:45:01.818Z","dateUpdated":"2026-08-31T14:57:41.423Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-30 12:17:18","lastModifiedDate":"2026-09-01 21:15:00","problem_types":["CWE-943","CWE-943 CWE-943 Improper Neutralization of Special Elements in Data Query Logic"],"metrics":{"cvssMetricV40":[{"source":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":2.1,"baseSeverity":"LOW","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-31T14:57:20.454917Z","id":"CVE-2026-78691","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"78691","Ordinal":"1","Title":"Unescaped backslash allows LIKE wildcard injection in AshSql str","CVE":"CVE-2026-78691","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"78691","Ordinal":"1","NoteData":"Improper Neutralization of Special Elements in Data Query Logic vulnerability in ash-project ash_sql allows a user who supplies a search term to contains/2, string_starts_with/2, or string_ends_with/2 to inject live SQL LIKE wildcards, turning a literal substring search into an attacker-controlled pattern match.\n\nThe escape helpers in AshSql.Expr prefix % and _ with a backslash but never escape a backslash already present in the input. Because backslash is the default LIKE escape character, the escaping defeats itself: the input \\% becomes the pattern fragment \\\\%, where \\\\ is a literal backslash and the attacker's % remains a live wildcard. The search value stays parameterized, so this is confined to the LIKE pattern grammar rather than full SQL. An attacker can widen matches to probe values, slip past a negated contains(...) guard, or crash the query with a trailing lone backslash.\n\nThis issue affects ash_sql: from 0.1.1-rc.10 before 0.7.1.","Type":"Description","Title":"Unescaped backslash allows LIKE wildcard injection in AshSql str"}]}}}