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TI-2026-04436 Aliases CVE-2026-5081GHSA-546v-xqjf-qgcr

Apache::Session::Generate::ModUniqueId versions from 1.54 through 1.94 for Perl session…

Priority MEDIUM 45CWE-340Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

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

Summary

Apache::Session::Generate::ModUniqueId versions from 1.54 through 1.94 for Perl session ids are insecure. Apache::Session::Generate::ModUniqueId (added in version 1.54) uses the value of the UNIQUE_ID environment variable for the session id. The UNIQUE_ID variable is set by the Apache mod_unique_id plugin, which generates unique ids for the request. The id is based on the IPv4 address, the process id, the epoch time, a 16-bit counter and a thread index, with no obfuscation. The server IP is often available to the public, and if not available, can be guessed from previous session ids being issued. The process ids may also be guessed from previous session ids. The timestamp is easily guessed (and leaked in the HTTP Date response header). The purpose of mod_unique_id is to assign a unique id to requests so that events can be correlated in different logs. The id is not designed, nor is it suitable for security purposes.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00302 23rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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
CHORNYApache::Session::Generate::ModUniqueId1.54 – 1.94—No fix listedCNA
  • Apache::Session::Generate::ModUniqueId VendorCHORNY Affected 1.54 – 1.94 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:chorny:apache\:\:session\:\:generate\:\:moduniqueid:*:*:*:*:*:perl:*:* session\VulnerableCHORNY
  • cpe:2.3:a:chorny:apache\:\:session\:\:generate\:\:moduniqueid:*:*:*:*:*:perl:*:* Versions session\ Vulnerable ·CHORNY

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat Hardened Images

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-5081
  2. 2026-10-03 Alias added: GHSA-546v-xqjf-qgcr

References

Advisory 1

Other 2

  • TI-2025-27322 Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id CVSS 3.1CRITICAL 9.1
  • TI-2013-06215 Apache::Session versions through 1.94 for Perl re-creates deleted sessions CVSS 3.1CRITICAL 9.1

Sources

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