CVE-2026-109618 (GCVE-0-2026-109618)

Vulnerability from cvelistv5 – Published: 2026-10-21 13:48 – Updated: 2026-10-21 16:07
VLAI
Title
RCE via OOM corruption
Summary
PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort handling of the request. Some contexts may not properly account for this scenario and leave request memory in an uninitialized state before performing an allocation. The subsequent request cleanup procedure may read or branch on this memory. Multiple OOM strategies can consistently trigger this condition and lead to remote code execution (RCE).
Severity
9.2 (Critical)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-21 14:34 UTC
CWE
  • CWE-416 - Use after free
  • CWE-755 - Improper Handling of Exceptional Conditions
  • CWE-824 - Access of uninitialized pointer
  • CWE-1325 - Improperly controlled sequential memory allocation
  • CWE-1419 - Incorrect Initialization of Resource
Assigner
php CNA under the mitre root
CNA scorecard B 81/100 over 27 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
PHP Group PHP Affected: 8.2.* , < 8.2.35 (semver)
Affected: 8.3.* , < 8.3.36 (semver)
Affected: 8.4.* , < 8.4.27 (semver)
Affected: 8.5.* , < 8.5.12 (semver)
guessed Create a notification for this product.
Credits
Ryan at Calif.io Wiz OpenAI Arnaud Le Blanc Ilija Tovilo Jakub Zelenka Nora Dossche
Show details on NVD website
To clipboard 

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  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.