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TI-2026-42306 Aliases CVE-2026-59139GHSA-3jgv-34p5-3fxv

Out-of-bounds read in EGOR Data::ReqRep::Shared

Priority MEDIUM 46CWE-125Published · Updated

Key facts

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

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

Summary

Data::ReqRep::Shared versions before 0.05 for Perl allow an out-of-bounds read via an unvalidated arena offset and length in reqrep_recv_locked. The attach-time validator reqrep_validate_header checks the header scalars and region layout against the file size, but does not validate the array contents it then trusts. reqrep_recv_locked does memcpy(copy_buf, req_arena + arena_off, len) with arena_off and len read raw from the mmap'd segment and never bounded against the arena capacity (req_arena_cap). A local peer that can write the backing file can leave the header valid while poisoning a request slot's offset and length, so receiving the request copies a file-controlled offset and length out of the arena, reading adjacent memory or crashing the process.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00539 45th percentileScored 2026-11-07
Fix Fixed Data::ReqRep::Shared (EGOR): 0.05

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
EGORData::ReqRep::Sharedbefore 0.050.05Patch availableCNA
  • Data::ReqRep::Shared VendorEGOR Affected before 0.05 Fixed in 0.05 Patch available CNA

Remediation

  • Fix · CNA Data::ReqRep::Shared (EGOR) Fixed in 0.05

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    EGOR Data::ReqRep::Shared 0.05

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-46467 Link following in EGOR Data::ReqRep::SharedPriority LOW 17
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-59139
  2. 2026-10-03 Alias added: GHSA-3jgv-34p5-3fxv

References

Other 2

  • TI-2026-42314 Out-of-bounds read in EGOR Data::DisjointSet::Shared CVSS 3.1CRITICAL 9.8
  • TI-2026-42311 Stack-based buffer overflow in EGOR Data::RingBuffer::Shared CVSS 3.1CRITICAL 9.8
  • TI-2026-42312 Out-of-bounds read in EGOR Data::Intern::Shared CVSS 3.1CRITICAL 9.1
  • TI-2026-42309 Out-of-bounds read in EGOR Data::HashMap::Shared CVSS 3.1CRITICAL 9.1
  • TI-2026-42308 Out-of-bounds read in EGOR Data::RadixTree::Shared CVSS 3.1CRITICAL 9.1
  • TI-2026-42307 Out-of-bounds read in EGOR Data::SortedSet::Shared CVSS 3.1CRITICAL 9.1
See all 22 →

Sources

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