libssh key passphrase bypass without agent set

Summary

CVECVE-2025-15224
StatePUBLISHED
Assignercurl
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-01-08 10:15:47 UTC
Updated2026-09-15 07:16:24 UTC
DescriptionWhen doing SSH-based transfers using either SCP or SFTP, and asked to do public key authentication, curl would wrongly still ask and authenticate using a locally running SSH agent.

Risk And Classification

Primary CVSS: v3.1 3.1 LOW from ADP

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Problem Types: CWE-287 | CWE-287 Improper Authentication | CWE-287 CWE-287 Improper Authentication


VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED3.1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary3.1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Haxx Curl All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Curl Curl affected 7.58.0 8.14.2 semver Not specified
CNA Curl Curl affected 8.15.0 8.16.1 semver Not specified
CNA Curl Curl affected 8.17.0 8.18.0 semver Not specified
CNA Curl Curl affected c92d2e14cfb0db662f958effd2ac86f995cf1b5a 16d5f2a5660c61cc27bd5f1c7f512391d1c927aa git Not specified
CNA Curl Curl affected 8.17.0 Not specified
CNA Curl Curl affected 8.16.0 Not specified
CNA Curl Curl affected 8.15.0 Not specified
CNA Curl Curl affected 8.14.1 Not specified
CNA Curl Curl affected 8.14.0 Not specified
CNA Curl Curl affected 8.13.0 Not specified
CNA Curl Curl affected 8.12.1 Not specified
CNA Curl Curl affected 8.12.0 Not specified
CNA Curl Curl affected 8.11.1 Not specified
CNA Curl Curl affected 8.11.0 Not specified
CNA Curl Curl affected 8.10.1 Not specified
CNA Curl Curl affected 8.10.0 Not specified
CNA Curl Curl affected 8.9.1 Not specified
CNA Curl Curl affected 8.9.0 Not specified
CNA Curl Curl affected 8.8.0 Not specified
CNA Curl Curl affected 8.7.1 Not specified
CNA Curl Curl affected 8.7.0 Not specified
CNA Curl Curl affected 8.6.0 Not specified
CNA Curl Curl affected 8.5.0 Not specified
CNA Curl Curl affected 8.4.0 Not specified
CNA Curl Curl affected 8.3.0 Not specified
CNA Curl Curl affected 8.2.1 Not specified
CNA Curl Curl affected 8.2.0 Not specified
CNA Curl Curl affected 8.1.2 Not specified
CNA Curl Curl affected 8.1.1 Not specified
CNA Curl Curl affected 8.1.0 Not specified
CNA Curl Curl affected 8.0.1 Not specified
CNA Curl Curl affected 8.0.0 Not specified
CNA Curl Curl affected 7.88.1 Not specified
CNA Curl Curl affected 7.88.0 Not specified
CNA Curl Curl affected 7.87.0 Not specified
CNA Curl Curl affected 7.86.0 Not specified
CNA Curl Curl affected 7.85.0 Not specified
CNA Curl Curl affected 7.84.0 Not specified
CNA Curl Curl affected 7.83.1 Not specified
CNA Curl Curl affected 7.83.0 Not specified
CNA Curl Curl affected 7.82.0 Not specified
CNA Curl Curl affected 7.81.0 Not specified
CNA Curl Curl affected 7.80.0 Not specified
CNA Curl Curl affected 7.79.1 Not specified
CNA Curl Curl affected 7.79.0 Not specified
CNA Curl Curl affected 7.78.0 Not specified
CNA Curl Curl affected 7.77.0 Not specified
CNA Curl Curl affected 7.76.1 Not specified
CNA Curl Curl affected 7.76.0 Not specified
CNA Curl Curl affected 7.75.0 Not specified
CNA Curl Curl affected 7.74.0 Not specified
CNA Curl Curl affected 7.73.0 Not specified
CNA Curl Curl affected 7.72.0 Not specified
CNA Curl Curl affected 7.71.1 Not specified
CNA Curl Curl affected 7.71.0 Not specified
CNA Curl Curl affected 7.70.0 Not specified
CNA Curl Curl affected 7.69.1 Not specified
CNA Curl Curl affected 7.69.0 Not specified
CNA Curl Curl affected 7.68.0 Not specified
CNA Curl Curl affected 7.67.0 Not specified
CNA Curl Curl affected 7.66.0 Not specified
CNA Curl Curl affected 7.65.3 Not specified
CNA Curl Curl affected 7.65.2 Not specified
CNA Curl Curl affected 7.65.1 Not specified
CNA Curl Curl affected 7.65.0 Not specified
CNA Curl Curl affected 7.64.1 Not specified
CNA Curl Curl affected 7.64.0 Not specified
CNA Curl Curl affected 7.63.0 Not specified
CNA Curl Curl affected 7.62.0 Not specified
CNA Curl Curl affected 7.61.1 Not specified
CNA Curl Curl affected 7.61.0 Not specified
CNA Curl Curl affected 7.60.0 Not specified
CNA Curl Curl affected 7.59.0 Not specified
CNA Curl Curl affected 7.58.0 Not specified

References

ReferenceSourceLinkTags
curl.se/docs/CVE-2025-15224.json 2499f714-1537-4658-8207-48ae4bb9eae9 curl.se Vendor Advisory
www.openwall.com/lists/oss-security/2026/01/07/7 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Patch, Third Party Advisory
hackerone.com/reports/3480925 2499f714-1537-4658-8207-48ae4bb9eae9 hackerone.com Exploit, Issue Tracking, Third Party Advisory
curl.se/docs/CVE-2025-15224.html 2499f714-1537-4658-8207-48ae4bb9eae9 curl.se Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Harry Sintonen (en)

CNA: Harry Sintonen (en)

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