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TI-2026-07466 Aliases CVE-2026-8503GHSA-2c59-fqg7-rwrx

Apache::Session::Generate::SHA256 versions before 1.3.19 for Perl create insecure session…

Priority LOW 34CWE-338Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Apache::Session::Generate::SHA256 versions before 1.3.19 for Perl create insecure session ids. Apache::Session::Generate::SHA256 generated session ids insecurely. The default session id generator returns a SHA-256 hash of the built-in rand() function, the epoch time, and the PID, that is hashed again. These are predictable, low-entropy sources. Predicable session ids could allow an attacker to gain access to systems. Note that version 1.3.19 has a fallback without warning to use insecure session generation method if the call to Crypt::URandom::urandom fails. However, this is unlikely as Crypt::URandom is a hardcoded requirement of the module. This issue is similar to CVE-2025-40931 for Apache::Session::Generate::MD5.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00243 15th percentileScored 2026-11-07
Fix Fixed Apache::Session::Generate::SHA256 (GUIMARD): 1.3.19

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GUIMARDApache::Session::Generate::SHA256before 1.3.191.3.19Patch availableCNA
  • Apache::Session::Generate::SHA256 VendorGUIMARD Affected before 1.3.19 Fixed in 1.3.19 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:guimard:apache\:\:session\:\:generate\:\:sha256:*:*:*:*:*:perl:*:* session\VulnerableGUIMARD
  • cpe:2.3:a:guimard:apache\:\:session\:\:generate\:\:sha256:*:*:*:*:*:perl:*:* Versions session\ Vulnerable ·GUIMARD

Remediation

  • Fix · CNA Apache::Session::Generate::SHA256 (GUIMARD) Fixed in 1.3.19

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-8503
  2. 2026-10-03 Alias added: GHSA-2c59-fqg7-rwrx

References

Patch 1

Advisory 2

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences