Security readout for executives and security teams
HTTP::Session2, a Perl session-management library, could create predictable session IDs in versions before 1.12. Predictable session IDs can weaken account/session protection because attackers may have a better chance of guessing valid sessions. Business urgency depends on whether internet-facing Perl applications use this library for authentication or user sessions. Exposure is most likely in Perl applications using HTTP::Session2 before 1.12 to generate session identifiers, especially for web login sessions. Systems without /dev/urandom may be more exposed to fallback behavior. The bundle does not identify specific downstream products or distributions. Treat as a targeted remediation item, not an emergency unless critical internet-facing applications use affected versions for authentication. Upgrade during the next security maintenance window, with higher priority for customer portals, admin panels, or systems handling sensitive data. Mitigation focus: Upgrade HTTP::Session2 to version 1.12 or later.; Prioritize internet-facing applications using HTTP::Session2 for authentication sessions.; If upgrade is delayed, review vendor guidance for supported mitigations..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CWE-338: Exact CWE lookup
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Open ATT&CK lookupCWE-340: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-3255 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L3.92.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://metacpan.org/release/TOKUHIROM/HTTP-Session2-1.11/source/lib/HTTP/Session2/Random.pm#L35CVE reference
- https://metacpan.org/release/TOKUHIROM/HTTP-Session2-1.01/source/lib/HTTP/Session2/ServerStore.pm#L68CVE reference
- https://metacpan.org/release/TOKUHIROM/HTTP-Session2-1.12/changesCVE reference · release-notes
- https://github.com/tokuhirom/HTTP-Session2/commit/9cfde4d7e0965172aef5dcfa3b03bb48df93e636.patchCVE reference · patch
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Generation of Predictable Numbers or Identifiers
Generation of Predictable Numbers or Identifiers represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.