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CVE-2025-40931Disclosure(chorny / apache\)

LOWCVSS 9.1 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id. Apache::Session::Generate::MD5 generates session ids insecurely. The default session id generator returns a MD5 hash seeded with the built-in rand() function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage. Predicable session ids could allow an attacker to gain access to systems. Note that the libapache-session-perl package in some Debian-based Linux distributions may be patched to use Crypt::URandom.

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0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-338CWE-340

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • apache\

Threat summary

  • 3 mentions across 3 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 3 classified signals
  • Peaked 2d ago at 1 mentions (2026-03-05); latest day: 1
  • 3 total mentions across 3 days

Affected systems

Vendors
chorny
Products
apache\

1 version affected across 1 product

Deep dive

Activity timeline3 mentions / 3d
00111Mentions · 2026-03-05: 1Mentions · 2026-03-08: 1Mentions · 2026-03-09: 1Technical Details · 2026-03-09: 103-0503-0803-09
Signal classification1 categories
Disclosure
3100.0%
Referenced assets2 URLs
Full discourse3 posts
  • Open Source Security mailing list@oss_security
    Disclosure

    Perl CPAN CVE-2025-40931: Apache::Session::Generate::MD5 through 1.94 create insecure session id CVE-2026-3257: UnQLite through 0.06 uses potentially insecure version of the UnQLite library CVE-2026-3381: Compress::Raw::Zlib through 2.219 use potentially insecure versions of zlib

    Post summary

    Three Perl CPAN modules are announced as vulnerable: Apache::Session::Generate::MD5 (insecure session IDs), UnQLite (insecure library version), and Compress::Raw::Zlib (insecure zlib version), with affected versions specified.

    00020333
    4.4K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2025-40931 Predictable Session ID Generation Vulnerability in Apache::Session::Generate::MD5 https://vulmon.com/vulnerabilitydetails?qid=CVE-2025-40931

    Post summary

    The text announces a predictable session ID generation vulnerability in Apache::Session::Generate::MD5, but provides no PoC, exploit, active exploitation evidence, patch information, or detailed technical parameters.

    0001076
    4.0K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2025-40931 Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id. Apache::Session::Generate::MD5 generates session ids insecurely. The defaul… https://www.cve.org/CVERecord?id=CVE-2025-40931

    Post summary

    The post announces CVE‑2025‑40931, noting insecure session ID generation in Apache::Session::Generate::MD5, but gives no PoC, exploit, patch, or detailed technical specifics.

    00000245
    56.6K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appchornyapache\\md5-

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