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Mozilla: Arbitrary JavaScript execution in PDF.js

🗓️ 20 Aug 2026 07:34:06Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 3 Views

PDF.js missing font type check allows arbitrary JavaScript execution in its context.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
githubexploit
GithubExploit		Exploit for Improper Check for Unusual or Exceptional Conditions in Mozilla Firefox
20 May 202410:02
–githubexploit
githubexploit
GithubExploit		Exploit for Improper Check for Unusual or Exceptional Conditions in Mozilla Firefox
1 May 202610:40
–githubexploit
githubexploit
GithubExploit		Exploit for Improper Check for Unusual or Exceptional Conditions in Mozilla Firefox
20 May 202422:56
–githubexploit
githubexploit
GithubExploit		Exploit for Improper Check for Unusual or Exceptional Conditions in Mozilla Firefox
16 May 202507:19
–githubexploit
githubexploit
GithubExploit		Exploit for Improper Check for Unusual or Exceptional Conditions in Mozilla Firefox
22 Aug 202505:51
–githubexploit
githubexploit
GithubExploit		Exploit for Improper Check for Unusual or Exceptional Conditions in Mozilla Firefox
28 Jun 202517:46
–githubexploit
githubexploit
GithubExploit		Exploit for Improper Check for Unusual or Exceptional Conditions in Mozilla Firefox
27 Jul 202610:59
–githubexploit
githubexploit
GithubExploit		Exploit for Improper Check for Unusual or Exceptional Conditions in Mozilla Firefox
13 Jun 202415:14
–githubexploit
githubexploit
GithubExploit		Exploit for Improper Check for Unusual or Exceptional Conditions in Mozilla Firefox
25 Mar 202516:27
–githubexploit
githubexploit
GithubExploit		Exploit for Improper Check for Unusual or Exceptional Conditions in Mozilla Firefox
25 Jun 202607:44
–githubexploit
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.4i686webkit2gtk32.52.5-1.el8_4webkit2gtk3-2.52.5-1.el8_4.i686.rpm
Red Hat Enterprise Linux8.4x86_64webkit2gtk32.52.5-1.el8_4webkit2gtk3-2.52.5-1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4i686webkit2gtk3-debuginfo2.52.5-1.el8_4webkit2gtk3-debuginfo-2.52.5-1.el8_4.i686.rpm
Red Hat Enterprise Linux8.4x86_64webkit2gtk3-debuginfo2.52.5-1.el8_4webkit2gtk3-debuginfo-2.52.5-1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4i686webkit2gtk3-debugsource2.52.5-1.el8_4webkit2gtk3-debugsource-2.52.5-1.el8_4.i686.rpm
Red Hat Enterprise Linux8.4x86_64webkit2gtk3-debugsource2.52.5-1.el8_4webkit2gtk3-debugsource-2.52.5-1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4i686webkit2gtk3-devel2.52.5-1.el8_4webkit2gtk3-devel-2.52.5-1.el8_4.i686.rpm
Red Hat Enterprise Linux8.4x86_64webkit2gtk3-devel2.52.5-1.el8_4webkit2gtk3-devel-2.52.5-1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4i686webkit2gtk3-devel-debuginfo2.52.5-1.el8_4webkit2gtk3-devel-debuginfo-2.52.5-1.el8_4.i686.rpm
Red Hat Enterprise Linux8.4x86_64webkit2gtk3-devel-debuginfo2.52.5-1.el8_4webkit2gtk3-devel-debuginfo-2.52.5-1.el8_4.x86_64.rpm
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20 Aug 2026 08:12Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.15.6 - 8.8
EPSS0.72648
SSVC
CWE-754
PDF.jsMozillaArbitrary JavaScript ExecutionType Check MissingFont Handling
3