GHSA-xhr8-9mw2-3mf4

GHSA-xhr8-9mw2-3mf4 PUBLISHED CVSS 7.300000190734863 HIGH

Memory safety bugs present in Firefox ESR 115.35.0, Firefox ESR 140.10.0, Thunderbird ESR 140.10.0, Firefox 150.0.0 and Thunderbird 150.0.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, and Firefox ESR 115.35.1.

Risk Scores

CVSS 3.1

7.300000190734863

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Exploit Intelligence

mfsa2026-38.yml (github-poc)
mfsa2026-37.yml (github-poc)
2026.xml (github-poc)

Timeline

Apr 28, 2026 CVE Published
Apr 30, 2026 CVE Updated
May 7, 2026 Security Advisory

References

https://nvd.nist.gov/vuln/detail/CVE-2026-7322 advisory
https://bugzilla.mozilla.org/buglist.cgi?bug_id=2021904%2C2022731%2C2027158%2C2027733%2C2027973%2C2027976%2C2028231%2C2028731%2C2028886%2C2029067%2C2029700%2C2029724%2C2029806%2C2029814%2C2030108%2C2030111%2C2031524%2C2031921%2C2032040 url
https://www.mozilla.org/security/advisories/mfsa2026-35 url
https://www.mozilla.org/security/advisories/mfsa2026-36 url
https://www.mozilla.org/security/advisories/mfsa2026-37 url
https://www.mozilla.org/security/advisories/mfsa2026-38 url
https://www.mozilla.org/security/advisories/mfsa2026-39 url

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