CVE-2026-89161 (GCVE-0-2026-89161)
Vulnerability from cvelistv5 – Published: 2026-09-11 04:11 – Updated: 2026-09-11 04:11
VLAI
EPSS
VEX
Summary
In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur.
Severity
7.4 (High)
CWE
- CWE-590 - Free of Memory not on the Heap
Assigner
References
Impacted products
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"references": [
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"url": "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48"
},
{
"url": "https://github.com/PCRE2Project/pcre2/pull/937"
}
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"cveMetadata": {
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"dateReserved": "2026-09-11T04:11:51.278Z",
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"redhat_vex": {
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"current_release_date": "2026-09-11T04:33:42+00:00",
"cve": "CVE-2026-89161",
"id": "CVE-2026-89161",
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"product_status:known_affected": "2",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "pcre2: PCRE2: Memory corruption vulnerability in pcre2_jit_match",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89161.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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