In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the password plugin of the Roundcube Webmail was subject to username spoofing via session data, which could lead to account takeover.
CVE-2026-62644
MEDIUMPre-NVD 6.46.4—Trending — 4 sources updated this week
EchelonGraph scoreHIGH confidence
Score 6.4 from GitHub Security Advisory published 2026-07-14. a secondary CVSS source baseline 6.4; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
6.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.4Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.4
- EG Score
- 6.4(high)
- EPSS
- 14.9%
- KEV
- Not listed
Published
July 14, 2026
Last Modified
July 15, 2026
Advisory Details (7)
Auto-updated Jul 15, 2026Patch available. Sources: github_commit, github_release.
generic
Security updates 1.6.17 and 1.7.2 released
https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2github_release Patch Available
Roundcube Webmail 1.7.2
Patch available: roundcube/roundcubemail 1.7.2
https://github.com/roundcube/roundcubemail/releases/tag/1.7.2github_release Patch Available
Roundcube Webmail 1.6.17
Patch available: roundcube/roundcubemail 1.6.17
https://github.com/roundcube/roundcubemail/releases/tag/1.6.17github_commit
commit 9a96c20d8c7c (roundcube/roundcubemail)
Fix landed in roundcube/roundcubemail commit 9a96c20d8c7c — awaiting tagged release
https://github.com/roundcube/roundcubemail/commit/9a96c20d8c7c9135876b68bebd6960af3ee60923github_commit
commit 83150ce04d68 (roundcube/roundcubemail)
Fix landed in roundcube/roundcubemail commit 83150ce04d68 — awaiting tagged release
https://github.com/roundcube/roundcubemail/commit/83150ce04d689a70f92d511bcae40adba8d55476github_commit
commit 7414fef51cd2 (roundcube/roundcubemail)
Fix landed in roundcube/roundcubemail commit 7414fef51cd2 — awaiting tagged release
https://github.com/roundcube/roundcubemail/commit/7414fef51cd2407d39faab99680763f10ed5231dgithub_commit
commit 5cdc6a48b40b (roundcube/roundcubemail)
Fix landed in roundcube/roundcubemail commit 5cdc6a48b40b — awaiting tagged release
https://github.com/roundcube/roundcubemail/commit/5cdc6a48b40beabff7f0bf5d9035f4491e877e4cVendor Advisories for CVE-2026-62644(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 5× in last 7d / 5× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 16:04 UTCEG score recompute
- 2026-07-15 16:04 UTCGHSA enrichment
- 2026-07-14 16:11 UTCEG score recompute
- 2026-07-14 16:10 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-290
Frequently asked(5)
What is CVE-2026-62644?
CVE-2026-62644 is a medium vulnerability published on July 14, 2026. In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the password plugin of the Roundcube Webmail was subject to username spoofing via session data, which could lead to account takeover.
When was CVE-2026-62644 disclosed?
CVE-2026-62644 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-62644 actively exploited?
CVE-2026-62644 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-62644?
CVE-2026-62644 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2026-62644?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62644, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-62644
Is Your Infrastructure Affected by CVE-2026-62644?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.