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.
Conclusion & alert: CVE-2007-0537 is rated Moderate Risk (43.1/100): CVSS Low severity, with medium exploitation likelihood (EPSS 4.09%). Core evidence: EPSS rose +1.73% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-02-22 | 2.36% | 4.09% | +1.73% |
| 2 | 2025-09-17 | 1.73% | 2.36% | +0.63% |
| 3 | 2025-04-15 | — | 1.73% | — |
Full EPSS history (22 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 2.6 | 2.0 | LOW |
|
4.9 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
low | CVE-2007-0537: 1 GLSA(s) (200703-10), 1 atom(s) (kde-base/kdelibs); latest impact low. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2007-0537 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2007-0537 |
ubuntu
|
medium | CVE-2007-0537 medium priority: Ubuntu including 1 source packages (kdelibs), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): released 3, needs-triage 1. | https://ubuntu.com/security/CVE-2007-0537 |
Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=225414 The Red Hat Security Response Team has rated this issue as having low security impact, a future update may address this flaw. More information regarding issue severity can be found here: http://www.redhat.com/security/updates/classification/