PCRE2 before 10.48 allows a pcre2_dfa_match out-of-bounds write because reuse of a cached workspace block, in a recursive DFA matching workspace, lacks a size check (even though a newly allocated block, for the same purpose, does have a size check). This outcome requires an attacker-controlled regular expression, or a recursive pattern in conjunction with a small heap limit (this can be set through the API).
Metrics
Affected Vendors & Products
References
History
Tue, 08 Sep 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Sat, 05 Sep 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Sat, 05 Sep 2026 06:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Out-of-Bounds Write in PCRE2 DFA Matching Due to Cached Workspace Size Check Missing |
Sat, 05 Sep 2026 05:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | PCRE2 before 10.48 allows a pcre2_dfa_match out-of-bounds write because reuse of a cached workspace block, in a recursive DFA matching workspace, lacks a size check (even though a newly allocated block, for the same purpose, does have a size check). This outcome requires an attacker-controlled regular expression, or a recursive pattern in conjunction with a small heap limit (this can be set through the API). | |
| First Time appeared |
Pcre
Pcre pcre2 |
|
| Weaknesses | CWE-424 | |
| CPEs | cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Pcre
Pcre pcre2 |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: mitre
Published: 2026-09-05T05:09:25.571Z
Updated: 2026-09-08T18:07:49.889Z
Reserved: 2026-09-05T05:09:25.213Z
Link: CVE-2026-86145
Updated: 2026-09-05T13:06:54.297Z
Status : Deferred
Published: 2026-09-05T06:17:10.370
Modified: 2026-09-09T16:04:24.933
Link: CVE-2026-86145
No data.