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TI-2026-42312 Aliases CVE-2026-59145GHSA-wwq3-v3pc-8w9p

Out-of-bounds read in EGOR Data::Intern::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::Intern::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalidated slot, reverse and arena indices in si_idx_find. The attach-time validator si_validate_header is thorough about the header and layout (magic, version, section offsets, total_size, count and arena_used) but does not validate the three arrays it then trusts. Every lookup in si_idx_find walks a triple indirection read straight from the mmap'd segment, arena[reverse[slots[i].id]], with no bound on slots[i].id against count, on the reverse[id] arena offset against arena_used, or on the arena record's length prefix. A local peer that can write the backing file can leave the header valid while poisoning a slot id, a reverse offset or an arena length prefix, so an id_of, intern or string lookup dereferences the chain out of bounds; because string() returns a file-controlled length of bytes from the arena, adjacent process memory can be disclosed.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00539 45th percentileScored 2026-11-07
Fix Fixed Data::Intern::Shared (EGOR): 0.02

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::Intern::Sharedbefore 0.020.02Patch availableCNA
  • Data::Intern::Shared VendorEGOR Affected before 0.02 Fixed in 0.02 Patch available CNA

Remediation

  • Fix · CNA Data::Intern::Shared (EGOR) Fixed in 0.02

Fixed in the same release

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

  • Release ·

    EGOR Data::Intern::Shared 0.02

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-46473 Link following in EGOR Data::Intern::SharedPriority LOW 17
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-59145
  2. 2026-10-03 Alias added: GHSA-wwq3-v3pc-8w9p

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-2026-42309 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
  • TI-2026-42306 Out-of-bounds read in EGOR Data::ReqRep::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