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TI-2026-42314 Aliases CVE-2026-59147GHSA-2q6p-wjf6-872r

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

Priority MEDIUM 50CWE-125Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Data::DisjointSet::Shared versions before 0.02 for Perl allow out-of-bounds reads and writes via an unvalidated parent index in dsu_find. The attach-time validator dsu_validate_header checks the header scalars and region layout against the file size, but does not validate the array contents it then trusts. dsu_find walks and path-compresses parent[x] with x a raw file-stored index never bounded against the node count, so both the read and the compression write-back land out of bounds. A local peer that can write the backing file can leave the header valid while poisoning the parent array, so the next find or union both reads and writes through an out-of-bounds parent index, corrupting memory or crashing the process.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00553 46th percentileScored 2026-11-07
Fix Fixed Data::DisjointSet::Shared (EGOR): 0.02

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

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

Remediation

  • Fix · CNA Data::DisjointSet::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::DisjointSet::Shared 0.02

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-46475 Link following in EGOR Data::DisjointSet::SharedPriority LOW 18
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-59147
  2. 2026-10-03 Alias added: GHSA-2q6p-wjf6-872r

References

Other 2

  • 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
  • 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