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Fencer Vulns
high 7.5

CVE-2005-1531 json

Firefox before 1.0.4 and Mozilla Suite before 1.7.8 does not properly implement certain security checks for script injection, which allows…

published 2005-05-12 21 y ago modified 2026-06-16 4 mo ago also EUVD-2005-1534

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.3%
EPSS 3.3% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

Firefox before 1.0.4 and Mozilla Suite before 1.7.8 does not properly implement certain security checks for script injection, which allows remote attackers to execute script via "Wrapped" javascript: URLs, as demonstrated using (1) a javascript: URL in a view-source: URL, (2) a javascript: URL in a jar: URL, or (3) "a nested variant."

Patch / fix

  • devhelp RHEL 4 0.9.2-2.4.5
  • firefox RHEL 4 1.0.4-1.4.1

red hat advisories RHSA-2005:435RHSA-2005:434

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2005-1531 updated

security flaw

  • Red Hat Enterprise Linux AS version 4 devhelp 0.9.2-2.4.5, firefox 1.0.4-1.4.1 Red Hat Enterprise Linux Desktop version 4 devhelp 0.9.2-2.4.5, firefox 1.0.4-1.4.1 Red Hat Enterprise Linux ES version 4 devhelp 0.9.2-2.4.5, firefox 1.0.4-1.4.1 Red Hat Enterprise Linux WS version 4 devhelp 0.9.2-2.4.5, firefox 1.0.4-1.4.1
    fixed: vendor fix RHSA-2005:435

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.29% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns 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.