VulnSocial

CVE-2026-8503Disclosure(guimard / apache\)

LOWCVSS 6.5 · MEDIUM

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::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.

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0.0/ 10 priority

Sources & remediation

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

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

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

  • apache\

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
guimard
Products
apache\

1 version affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-05-20: 1Technical Details · 2026-05-20: 105-20
Signal classification1 categories
Disclosure
1100.0%
Referenced assets2 URLs
Full discourse1 post
  • Open Source Security mailing list@oss_security
    Disclosure

    Perl CPAN CVE-2026-8503: Apache::Session::Generate::SHA256 before 1.3.19 create insecure session ids https://www.openwall.com/lists/oss-security/2026/05/15/16 CVE-2026-46474: Trog::TOTP before 1.006 generate secrets using rand https://www.openwall.com/lists/oss-security/2026/05/15/18

    Post summary

    The note lists two Perl CPAN modules described as vulnerable by CVE numbers, highlighting insecure session ID generation and weak secret generation. No PoC, exploit, patch, or active exploitation is referenced.

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CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appguimardapache\\sha256-

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