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Fencer Vulns
low 2.6

CVE-2008-2933 json

Mozilla Firefox before 2.0.0.16, and 3.x before 3.0.1, interprets '|' (pipe) characters in a command-line URI as requests to open multiple…

published 2008-07-17 18 y ago modified 2026-06-16 4 mo ago also EUVD-2008-2926

cvss
2.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.8%
EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

Mozilla Firefox before 2.0.0.16, and 3.x before 3.0.1, interprets '|' (pipe) characters in a command-line URI as requests to open multiple tabs, which allows remote attackers to access chrome:i URIs, or read arbitrary local files via manipulations involving a series of URIs that is not entirely handled by a vector application, as exploited in conjunction with CVE-2008-2540. NOTE: this issue exists because of an insufficient fix for CVE-2005-2267.

Patch / fix

  • firefox RHEL 4.5 EUS, RHEL 4 1.5.0.12-0.21.el4
  • firefox RHEL 5 3.0.1-1.el5
  • yelp RHEL 5 2.16.0-20.el5
  • devhelp RHEL 5 0.12-18.el5
  • xulrunner RHEL 5 1.9.0.1-1.el5
  • nspluginwrapper RHEL 5 0.9.91.5-22.el5
  • xulrunner-devel-unstable RHEL 5 1.9.0.1-1.el5

red hat advisories RHSA-2008:0598RHSA-2008:0597

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-2008-2933 updated

Firefox command line URL launches multi-tabs

  • Red Hat Enterprise Linux (v. 5 server) yelp 2.16.0-20.el5, devhelp 0.12-18.el5, firefox 3.0.1-1.el5, xulrunner 1.9.0.1-1.el5, nspluginwrapper 0.9.91.5-22.el5, xulrunner-devel-unstable 1.9.0.1-1.el5
    fixed: vendor fix RHSA-2008:0597
  • Red Hat Enterprise Linux AS EUS (v. 4.5) firefox 1.5.0.12-0.21.el4 Red Hat Enterprise Linux AS version 4 firefox 1.5.0.12-0.21.el4
    fixed: vendor fix RHSA-2008:0598
  • Red Hat Enterprise Linux Desktop (v. 5 client) yelp 2.16.0-20.el5, devhelp 0.12-18.el5, firefox 3.0.1-1.el5, xulrunner 1.9.0.1-1.el5, nspluginwrapper 0.9.91.5-22.el5, xulrunner-devel-unstable 1.9.0.1-1.el5
    fixed: vendor fix RHSA-2008:0597
  • Red Hat Enterprise Linux Desktop version 4 firefox 1.5.0.12-0.21.el4
    fixed: vendor fix RHSA-2008:0598
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) devhelp 0.12-18.el5, xulrunner 1.9.0.1-1.el5, xulrunner-devel-unstable 1.9.0.1-1.el5
    fixed: vendor fix RHSA-2008:0597
  • Red Hat Enterprise Linux ES EUS (v. 4.5) firefox 1.5.0.12-0.21.el4 Red Hat Enterprise Linux ES version 4 firefox 1.5.0.12-0.21.el4 Red Hat Enterprise Linux WS version 4 firefox 1.5.0.12-0.21.el4
    fixed: vendor fix RHSA-2008:0598

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

2.75% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 2.6 AV:N/AC:H/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-20 Improper Input Validation

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.