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CVE Vulnerability Details :
CVE-2026-42300
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-12 May, 2026 | 17:25
Updated At-13 May, 2026 | 14:38
Rejected At-
▼CVE Numbering Authority (CNA)
DevGuard: Unauthenticated identity assertion via `X-Admin-Token` header

DevGuard provides vulnerability management for the full software supply chain. Prior to 1.2.2, the SessionMiddleware accepts a client-supplied X-Admin-Token HTTP request header and uses its raw string value as the authenticated userID when no Kratos session cookie is present. An unauthenticated attacker who knows or can guess a target user's Kratos identity UUID can issue requests as that user. Where the target user is an organisation admin or owner, this gives the attacker full control over that organisation's DevGuard resources. This vulnerability is fixed in 1.2.2.

Affected Products
Vendor
l3montree-dev
Product
devguard
Versions
Affected
  • < 1.2.2
Problem Types
TypeCWE IDDescription
CWECWE-288CWE-288: Authentication Bypass Using an Alternate Path or Channel
Type: CWE
CWE ID: CWE-288
Description: CWE-288: Authentication Bypass Using an Alternate Path or Channel
Metrics
VersionBase scoreBase severityVector
4.09.3CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Version: 4.0
Base score: 9.3
Base severity: CRITICAL
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
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Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/l3montree-dev/devguard/security/advisories/GHSA-2g9v-7mr5-fgjg
x_refsource_CONFIRM
https://github.com/l3montree-dev/devguard/commit/6f38310bf93b2a63df3055038f4da82b1f4e6d9a
x_refsource_MISC
Hyperlink: https://github.com/l3montree-dev/devguard/security/advisories/GHSA-2g9v-7mr5-fgjg
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/l3montree-dev/devguard/commit/6f38310bf93b2a63df3055038f4da82b1f4e6d9a
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
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Credits

Timeline
EventDate
Replaced By

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References
HyperlinkResource
Details not found