CVE-2026-10579: Picketlink-federation: auth bypass in picketlink saml unsolicited-response
Vulnerability summary
CVE-2026-10579 is a critical (CVSS 9.8) vulnerability. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36.7% of scored vulnerabilities.
Severe, CVSS 9.8 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3Timeline
- 11-08-2026PublishedVulnerability first disclosed.
- 01-11-2026Last modifiedVulnerability information updated.
Description
A flaw was found in Picketlink Federation SAML; the unsolcited response handler would accept forged assertions with no verification or validation, permitting an unauthed attacker to authenticate as any principal in any role. This could lead to information disclosure, access to restricted operations, or other flaws.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.43%
Chance of exploitation in the next 30 days
Percentile
37%
Versus all other CVEs
30-day change
Increase +0.10 pp
From 0.32% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
No affected systems are recorded for this record.
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.