Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
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.
AV AC PR UI S C I A CVSS EPSS %ile KEV
N H N N U N N H 5.9 .0029 19.9 —
AFFECTED
Product Versions Fixed
PCRE2 10.34 – —
TIMELINE
Sep 11 Reserved by mitre
Sep 11 Published (CNA: mitre)
Sep 16 EXPLOIT PUBLISHED — CVE-2026-89156 (PCRE2). Public exploit reference added.
Sep 16 RESCORED — CVE-2026-89156 (PCRE2). CVSS 2.9 → 5.9 (NVD).
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.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| September 11, 2026 | Reserved | Reserved by mitre |
| September 11, 2026 | Published | Published (CNA: mitre) |
| September 16, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-89156 (PCRE2). Public exploit reference added. |
| September 16, 2026 | RESCORED | RESCORED — CVE-2026-89156 (PCRE2). CVSS 2.9 → 5.9 (NVD). |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| PCRE | PCRE2 | — | 10.34 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-89156 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
