OSV-2026-343
Vulnerability from osv_ossfuzz – Published: 2026-03-03 00:19 – Updated: 2026-09-02 14:36 – Source website
VLAI
Summary
Heap-buffer-overflow in pcre2_compile_32
Details
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=488713937
Crash type: Heap-buffer-overflow WRITE 4
Crash state:
pcre2_compile_32
pcre2_fuzzsupport.c
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"fixed_range": "a2b146a3245a930aa4c8ea8b33c0d83092daa7c9:e19e76ad8e5bbdf8a22b69e0f408692329e1e516",
"introduced_range": "fc38d9e784f6d7db070b78d062f1b3de034965b2:ccb259f089a8a54c06ce7b17d9cbac4302652bb1"
},
"ecosystem_specific": {
"severity": "HIGH"
},
"package": {
"ecosystem": "OSS-Fuzz",
"name": "pcre2",
"purl": "pkg:generic/pcre2"
},
"ranges": [
{
"events": [
{
"introduced": "24f9d8df0b8ddabc217ec4e7856a678e09f52773"
},
{
"fixed": "e19e76ad8e5bbdf8a22b69e0f408692329e1e516"
}
],
"repo": "https://github.com/PCRE2Project/pcre2",
"type": "GIT"
}
],
"versions": [
"pcre2-10.45",
"pcre2-10.45-RC1",
"pcre2-10.46",
"pcre2-10.47",
"pcre2-10.48",
"pcre2-10.48-RC1"
]
}
],
"details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=488713937\n\n```\nCrash type: Heap-buffer-overflow WRITE 4\nCrash state:\npcre2_compile_32\npcre2_fuzzsupport.c\n```\n",
"id": "OSV-2026-343",
"modified": "2026-09-02T14:36:09.507103Z",
"published": "2026-03-03T00:19:45.153716Z",
"references": [
{
"type": "REPORT",
"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=488713937"
}
],
"schema_version": "1.7.5",
"summary": "Heap-buffer-overflow in pcre2_compile_32"
}
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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.
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- 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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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.
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