CVE-2026-89156
CVE-2026-89156 is a low-severity vulnerability in Pcre Pcre2 with a CVSS 3.x base score of 2.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: Low (CVSS 3.x base score 2.9)
- EPSS exploit prediction: 0% (20th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Pcre Pcre2
- Published:
- Last modified:
Description
PCRE2 before 10.48 has a pcre2_match out-of-bounds read after a JIT fallback when an attacker can provide invalid UTF data.
Frequently asked questions
- What is CVE-2026-89156?
- PCRE2 before 10.48 has a pcre2_match out-of-bounds read after a JIT fallback when an attacker can provide invalid UTF data.
- How severe is CVE-2026-89156?
- CVE-2026-89156 has a CVSS 3.x base score of 2.9, rated low severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2026-89156 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-89156?
- CVE-2026-89156 primarily affects Pcre Pcre2. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-89156?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2026-89156 published?
- CVE-2026-89156 was published on 2026-09-11 and last updated on 2026-09-16.
References
- https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48
- https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-2p8c-ff85-vh9x
Affected products (2)
- cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:*
- cpe:2.3:a:pcre:pcre2:10.48:rc1:*:*:*:*:*:*
More vulnerabilities in Pcre Pcre2
- CVE-2017-8786 — Critical (CVSS 9.8): pcre2test.c in PCRE2 10.23 allows remote attackers to cause a denial of service (heap-based buffer overflow) or…
- CVE-2017-8399 — Critical (CVSS 9.8): PCRE2 before 10.30 has an out-of-bounds write caused by a stack-based buffer overflow in pcre2_match.c, related to a…
- CVE-2015-3210 — Critical (CVSS 9.8): Heap-based buffer overflow in PCRE 8.34 through 8.37 and PCRE2 10.10 allows remote attackers to execute arbitrary code…
- CVE-2016-3191 — Critical (CVSS 9.8): The compile_branch function in pcre_compile.c in PCRE 8.x before 8.39 and pcre2_compile.c in PCRE2 before 10.22…
- CVE-2025-58050 — Critical (CVSS 9.1): The PCRE2 library is a set of C functions that implement regular expression pattern matching. In version 10.45, a…
- CVE-2022-1587 — Critical (CVSS 9.1): An out-of-bounds read vulnerability was discovered in the PCRE2 library in the get_recurse_data_length() function of…
All CVEs affecting Pcre Pcre2 →
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