CVE-2018-5157

critical
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
9.5

Description

Same-origin protections for the PDF viewer can be bypassed, allowing a malicious site to intercept messages meant for the viewer. This could allow the site to retrieve PDF files restricted to viewing by an authenticated user on a third-party website. This vulnerability affects Firefox ESR < 52.8 and Firefox < 60.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-5157

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201805-10

OS impact

OSVersionStatusFixed in
arch archfixed60.0-1
debian debiansidfixed60.0-1
debian debianbookwormfixed52.8.0esr-1
debian debianbullseyefixed52.8.0esr-1
debian debianforkyfixed52.8.0esr-1
debian debiantrixiefixed52.8.0esr-1

References

Verify integrity in audit chain (admin only). AS-IS.