CVE-2026-89157: pcre pcre2 Integer Overflow or Wraparound
CVSS: 7.4v3.1HighAnalyzed
AliasesALPINE-CVE-2026-89157UBUNTU-CVE-2026-89157DEBIAN-CVE-2026-89157
Published 11-09-2026Last modified 11-09-2026
Vulnerability summary
CVE-2026-89157 is a high (CVSS 7.4) Integer Overflow or Wraparound vulnerability in pcre pcre2. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 19% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.4/10
010
High · v3.1 (NVD)EPSS score
0.28%
0%100%
Low · +0.06 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Advisory lineage
Upstream 0 · Downstream 12 · Related 8Timeline
- 11-09-2026PublishedVulnerability first disclosed.
- 11-09-2026Last modifiedVulnerability information updated.
Description
PCRE2 before 10.48, on 32-bit platforms, has a pcre2_pattern_convert out-of-bounds write when an attacker can provide a large pattern.
CVSS metrics
5 scores · 5 sources · 1 versionHigh 7.4Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:HSources5 sources · 5.7–7.4
- CVE.orgCNA5.7MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:LDiffers
- OSV · AlpineEcosystem advisory · calculated7.4HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated7.4HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.4HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
EPSS trend
Probability
0.28%
Chance of exploitation in the next 30 days
Percentile
19%
Versus all other CVEs
30-day change
+0.06 pp
From 0.21% on 20-09-2026
20-09-202620-10-2026
EPSS score0.28%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundPcre2
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Alpine1 product
- pcre2≥ 10.30, < 10.43-r1 | ≥ 10.30, < 10.46-r1 | ≥ 10.30, < 10.48-r0
Debian1 product
- pcre2< 10.42-1+deb12u1 | < 10.46-1~deb13u2 | < 10.48-1
Pcre1 product
- pcre2≥ 10.30, < 10.48 | 10.48:rc1
Ubuntu1 product
- pcre2All versions (No fix recorded)
4 vendors · 4 products
References
7 links- github.com/PCRE2Project/pcre2/security/advisories/GHSA-q8g2-wprr-34m9REPORTExploitMitigationVendor Advisory
