CVE-2026-103111
published 2026-09-30CVE-2026-103111: PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data.
PriorityP349high7.6CVSS 3.1
AVNACLPRLUINSUCLIHAL
EPSS
0.27%
18.8th percentile
PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mariadb_10.11 | mariadb | — | — |
| mariadb_11.8 | mariadb | — | — |
| openshift | ose-rhel-coreos-8 | — | — |
| openshift | ose-rhel-coreos-9 | — | — |
| pcre | pcre2 | < 10.49 | 10.49 |
| pcre | pcre2 | — | — |
CVSS provenance
nvdv3.17.6HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
vendor_redhat7.6HIGH
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VulDB
PCRE PCRE2 up to 10.48 JIT out-of-bounds write (EUVD-2026-89608 / Nessus ID 367266)
vuldb·2026-10-24·CVSS 7.6
CVE-2026-103111 [HIGH] PCRE PCRE2 up to 10.48 JIT out-of-bounds write (EUVD-2026-89608 / Nessus ID 367266)
A vulnerability, which was classified as critical, has been found in PCRE PCRE2 up to 10.48. Impacted is an unknown function of the component JIT. Performing a manipulation results in out-of-bounds write.
This vulnerability is reported as CVE-2026-103111. The attack is possible to be carried out remotely. No exploit exists.
It is advisable to upgrade the affected component.
GHSA
PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data.
ghsa_unreviewed·2026-09-30
CVE-2026-103111 [HIGH] CWE-787 PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data.
PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data.
Red Hat
pcre2: pcre2: Out-of-bounds write via crafted regular expression
vendor_redhat·2026-09-30·CVSS 7.6
CVE-2026-103111 [HIGH] CWE-787 pcre2: pcre2: Out-of-bounds write via crafted regular expression
pcre2: pcre2: Out-of-bounds write via crafted regular expression
A flaw was found in pcre2. When an application processes attacker-controlled regular expressions using certain Just-In-Time (JIT) compiler interfaces, an out-of-bounds write with arbitrary data can occur. An attacker could exploit this vulnerability to achieve arbitrary code execution, corrupt memory, or cause a denial of service (DoS).
Package: mariadb10.11 (Red Hat Enterprise Linux 10) - Affected
Package: mariadb11.8 (Red Hat Enterprise Linux 10) - Affected
Package: mingw-pcre2 (Red Hat Enterprise Linux 10) - Affected
Package: pcre2 (Red Hat Enterprise Linux 10) - Affected
Package: pcre2 (Red Hat Enterprise Linux 7) - Affected
Package: mariadb:10.11/mariadb (Red Hat Enterprise Linux 8) - Affected
Package: pcre2 (Red
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-103111 pcre2: pcre2: Out-of-bounds write via crafted regular expression [fedora-all]
bugzilla·2026-10-02·CVSS 7.6
CVE-2026-103111 [HIGH] CVE-2026-103111 pcre2: pcre2: Out-of-bounds write via crafted regular expression [fedora-all]
CVE-2026-103111 pcre2: pcre2: Out-of-bounds write via crafted regular expression [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data.
Bugzilla
CVE-2026-103111 pcre2: pcre2: Out-of-bounds write via crafted regular expression
bugzilla·2026-09-30·CVSS 7.6
CVE-2026-103111 [HIGH] CVE-2026-103111 pcre2: pcre2: Out-of-bounds write via crafted regular expression
CVE-2026-103111 pcre2: pcre2: Out-of-bounds write via crafted regular expression
PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data.
2026-09-30
Published