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Fencer Intel
medium 4.3

CVE-2009-5031 json

ModSecurity before 2.5.11 treats request parameter values containing single quotes as files, which allows remote attackers to bypass filter…

published 14y ago modified 4mo ago also EUVD-2009-4989

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

ModSecurity before 2.5.11 treats request parameter values containing single quotes as files, which allows remote attackers to bypass filtering rules and perform other attacks such as cross-site scripting (XSS) attacks via a single quote in a request parameter in the Content-Disposition field of a request with a multipart/form-data Content-Type header.

Patch / fix

  • trustwave modsecurity 2.5.11
  • apache2-mod_security2 openSUSE Tumbleweed 2.9.0-5.6

opensuse advisories openSUSE-SU-2024:10034-1

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Exploit prediction

2.93% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.