CVE-2026-58066

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-58066
StatePUBLISHED
Assignerhackerone
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-30 06:25:55 UTC
Updated2026-07-30 19:31:02 UTC
DescriptionRocket.Chat's SAML SSO before versions 8.7.0, 8.6.1, 8.5.2, 8.4.5, 8.3.7, 8.2.7, 8.1.7, 8.0.8, and 7.10.14 verified XML signatures but did not bind the validated signature to samlp:Response / saml:Assertion. An attacker could submit a wrapped document carrying forged identity attributes alongside any valid signature made by the trusted IdP certificate, and log in as an arbitrary user.

Risk And Classification

Primary CVSS: v3.0 9.8 CRITICAL from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

VersionSourceTypeScoreSeverityVector
3.0[email protected]Secondary9.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.0CNADECLARED9.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.0 Breakdown

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

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Rocket.Chat Rocket.Chat affected 8.7.0 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.6.1 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.5.2 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.4.5 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.3.7 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.2.7 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.1.7 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.0.8 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 7.10.14 semver Not specified

References

ReferenceSourceLinkTags
github.com/RocketChat/Rocket.Chat/pull/41233 [email protected] github.com
hackerone.com/reports/3827674 [email protected] hackerone.com
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: jayden (0jayden) (en)

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