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Fencer Vulns
medium 4.3

CVE-2009-3015 json

QtWeb 3.0 Builds 001 and 003 does not properly block javascript: and data: URIs in Refresh and Location headers in HTTP responses, which al…

published 2009-08-31 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-2999

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known

Summary

QtWeb 3.0 Builds 001 and 003 does not properly block javascript: and data: URIs in Refresh and Location headers in HTTP responses, which allows remote attackers to conduct cross-site scripting (XSS) attacks via vectors related to (1) injecting a Refresh header that contains a javascript: URI, (2) entering a javascript: URI when specifying the content of a Refresh header, (3) injecting a Refresh header that contains JavaScript sequences in a data:text/html URI, (4) entering a data:text/html URI with JavaScript sequences when specifying the content of a Refresh header, (5) injecting a Location header that contains JavaScript sequences in a data:text/html URI, or (6) entering a data:text/html URI with JavaScript sequences when specifying the content of a Location header.

Exploit prediction

0.91% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • websecurity.com.ua http://websecurity.com.ua/3386/ referenced PoC, tagged "exploit" by a source, unverified

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 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.