EUVD-2026-75942
GHSA-p3mm-8g7f-gg7r
Severity by source
AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
AV:N preferred over official AV:L because network applications routinely pass user-supplied text to PCRE2; AC:H retained for the specific JIT mode-mismatch precondition.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
6DescriptionCVE.org
PCRE2 before 10.48 has a pcre2_match out-of-bounds read after a JIT fallback when an attacker can provide invalid UTF data.
AnalysisAI
Out-of-bounds read in PCRE2 before 10.48 can produce a limited availability impact when an attacker supplies invalid UTF-encoded data to an application that JIT-compiled patterns for one match mode but then calls pcre2_match with a different mode, triggering a JIT fallback with inconsistent internal state. The flaw is tracked as GHSA-2p8c-ff85-vh9x and was corrected in the PCRE2 10.48 release alongside four other security fixes. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires three concurrent conditions: (1) the application explicitly calls pcre2_jit_compile() with options targeting a specific match mode such as PCRE2_JIT_COMPLETE; (2) pcre2_match() is subsequently called for a different match mode than what was JIT-compiled, triggering a JIT fallback; and (3) the data being matched is invalid UTF input that the attacker can influence or control. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The official CVSS 2.9 score (AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L) accurately captures the limited blast radius: no confidentiality or integrity loss, only limited availability degradation, with high attack complexity demanding a specific JIT mode-mismatch plus attacker-controlled invalid UTF input. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: PCRE2 10.48. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-125 – Out-of-bounds Read
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External POC / Exploit Code
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