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Fencer Vulns
low 2.6

CVE-2007-0537 json

The KDE HTML library (kdelibs), as used by Konqueror 3.5.5, does not properly parse HTML comments, which allows remote attackers to conduct…

published 2007-01-29 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-0535

cvss
2.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

The KDE HTML library (kdelibs), as used by Konqueror 3.5.5, does not properly parse HTML comments, which allows remote attackers to conduct cross-site scripting (XSS) attacks and bypass some XSS protection schemes by embedding certain HTML tags within a comment in a title tag, a related issue to CVE-2007-0478.

Patch / fix

  • kdelibs RHEL 4 6:3.3.1-9.el4
  • kdelibs RHEL 5 6:3.5.4-13.el5
  • kdelibs-apidocs RHEL 5 6:3.5.4-13.el5

red hat advisories RHSA-2007:0909

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-2007-0537 updated

konqueror XSS

  • Red Hat Enterprise Linux (v. 5 server) kdelibs 3.5.4-13.el5, kdelibs-apidocs 3.5.4-13.el5 Red Hat Enterprise Linux AS version 4 kdelibs 3.3.1-9.el4 Red Hat Enterprise Linux Desktop (v. 5 client) kdelibs 3.5.4-13.el5, kdelibs-apidocs 3.5.4-13.el5 Red Hat Enterprise Linux Desktop version 4 kdelibs 3.3.1-9.el4 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) kdelibs 3.5.4-13.el5, kdelibs-apidocs 3.5.4-13.el5 Red Hat Enterprise Linux ES version 4 kdelibs 3.3.1-9.el4
    +1 more products
    Red Hat Enterprise Linux WS version 4 kdelibs 3.3.1-9.el4
    fixed: vendor fix RHSA-2007:0909

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

1.90% chance of exploitation in the next 30 days, higher than 79% 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:N/I:P/A:N

Classification

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

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.