CVE-2026-46491

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 66% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
8.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.6Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. Prior to version 7.0.3, simplesamlphp-module-casserver builds file paths for the file-based CAS ticket store by directly concatenating the configured ticket directory with an attacker-controlled ticket identifier. Public CAS validation/proxy endpoints pass attacker-controlled ticket / pgt query parameters into this store. In deployments using FileSystemTicketStore, a remote attacker can use path traversal sequences such as ../target.serialized to make the CAS server read and unserialize files outside the ticket directory. In the CAS 1.0 validation flow, the same attacker-selected path is also passed to deleteTicket() immediately after getTicket() returns, which can delete the target file when it is readable by the PHP process, deletable under the PHP process filesystem permissions, and unserializes to a value compatible with the ?array return type. This issue has been patched in version 7.0.3.

CVSS v3
8.6
EG Score
8.6(medium)
EPSS
34.2%
KEV
Not listed

Published

May 15, 2026

Last Modified

June 10, 2026

Advisory Details (2)

Auto-updated Jun 10, 2026
Patch available. Sources: github_commit, github.
github Patch Available

SimpleSAMLphp casserver FileSystemTicketStore path traversal allows out-of-ticket-directory read/unserialize and conditional deletion · Advisory · simplesamlphp/simplesamlphp-module-casserver · GitHub

https://github.com/simplesamlphp/simplesamlphp-module-casserver/security/advisories/GHSA-jrrg-99xh-5j2q
github_commit

commit b84f3e4ed57c (simplesamlphp/simplesamlphp-module-casserver)

Fix landed in simplesamlphp/simplesamlphp-module-casserver commit b84f3e4ed57c — awaiting tagged release

https://github.com/simplesamlphp/simplesamlphp-module-casserver/commit/b84f3e4ed57c4d97e0dc73df102e7eff831a681f

Vendor Advisories for CVE-2026-46491(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
simplesamlphp/simplesamlphp-module-casserverv6.0.0 ... v7.0.2 (14 versions)7.0.3—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 50× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-12 05:46 UTCEPSS rescore
  2. 2026-07-11 08:27 UTCEPSS rescore
  3. 2026-07-09 19:10 UTCEPSS rescore
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  10. 2026-06-30 23:22 UTCEPSS rescore
  11. 2026-06-29 21:27 UTCEG score recompute
  12. 2026-06-29 14:06 UTCEPSS rescore
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  1. 2026-06-23 21:33 UTCEPSS rescore
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  4. 2026-06-21 14:56 UTCEPSS rescore
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  8. 2026-06-19 19:26 UTCEPSS rescore
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  17. 2026-06-15 23:32 UTCEG score recompute
  18. 2026-06-15 17:49 UTCEPSS rescore
  19. 2026-06-15 01:06 UTCEG score recompute
  20. 2026-06-14 12:12 UTCEG score recompute
  21. 2026-06-13 23:16 UTCEG score recompute
  22. 2026-06-13 23:00 UTCEPSS rescore
  23. 2026-06-13 04:03 UTCEG score recompute
  24. 2026-06-12 23:12 UTCEPSS rescore
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  26. 2026-06-12 14:10 UTCEG score recompute
  27. 2026-06-12 01:14 UTCEG score recompute
  28. 2026-06-11 14:00 UTCEPSS rescore
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  31. 2026-06-10 22:18 UTCEPSS rescore
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  36. 2026-06-08 05:26 UTCEG score recompute
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  43. 2026-06-04 10:56 UTCEG score recompute
  44. 2026-06-03 22:02 UTCEG score recompute
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  46. 2026-06-02 20:14 UTCEG score recompute
  47. 2026-06-02 07:20 UTCEG score recompute
  48. 2026-06-01 18:26 UTCEG score recompute
  49. 2026-06-01 05:32 UTCEG score recompute
  50. 2026-05-24 06:18 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-46491?
CVE-2026-46491 is a high vulnerability published on May 15, 2026. SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. Prior to version 7.0.3, simplesamlphp-module-casserver builds file paths for the file-based CAS ticket store by directly concatenating the configured ticket directory with an attacker-controlled…
When was CVE-2026-46491 disclosed?
CVE-2026-46491 was first published in the National Vulnerability Database on May 15, 2026, with the most recent update on June 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46491 actively exploited?
CVE-2026-46491 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 34.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46491?
CVE-2026-46491 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-46491?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46491, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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