CVE-2026-77508
LOWDescription
Weblate is a web based localization tool. Prior to 2026.8, an authenticated user can change the account's primary email through PUT or PATCH requests to /api/users/{username}/ without verifying the new address, allowing a later team invitation for that address to be accepted without access to the intended recipient's mailbox. This issue is fixed in version 2026.8.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 5% of all known CVEs.
References
Related Vulnerabilities
Other CWE-302 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-43441 | Critical | 9.8 | 69% | - | Fix |
| CVE-2024-4024 | High | 7.3 | 15% | - | Fix |
| CVE-2016-9482 | Critical | 9.8 | 4.7% | - | - |
| CVE-2025-29813 | Critical | 10.0 | 1.7% | - | - |
| CVE-2020-15074 | High | 7.5 | 1.0% | - | Fix |
| CVE-2024-49056 | High | 7.3 | 1.0% | - | - |
Common questions
How do I fix CVE-2026-77508?
No published fix for CVE-2026-77508 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-77508 being actively exploited?
Not that we know of. CVE-2026-77508 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.15% is the estimated probability that it will be exploited in the next 30 days. That is higher than 5% of all scored CVEs.
How severe is CVE-2026-77508?
CVE-2026-77508 has a CVSS v3 base score of 3.5, rated low. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-27.