CVE-2026-62643

HIGHPre-NVD 7.27.2—
EchelonGraph scoreHIGH confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-07-14. a secondary CVSS source baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.2Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843.

CVSS v3
7.2
EG Score
7.2(high)
EPSS
13.0%
KEV
Not listed

Published

July 14, 2026

Last Modified

July 15, 2026

Advisory Details (5)

Auto-updated Jul 15, 2026
Patch 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-1.7.2
github_release Patch Available

Roundcube Webmail 1.7.2

Patch available: roundcube/roundcubemail 1.7.2

https://github.com/roundcube/roundcubemail/releases/tag/1.7.2
github_release Patch Available

Roundcube Webmail 1.6.17

Patch available: roundcube/roundcubemail 1.6.17

https://github.com/roundcube/roundcubemail/releases/tag/1.6.17
github_commit

commit 6d69e094d55d (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 6d69e094d55d — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/6d69e094d55d3a9a84dfb36edf6ca985311f0c1c
github_commit

commit 294c7da6e728 (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 294c7da6e728 — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/294c7da6e7284166f040cef8607b677d459e0786

Vendor Advisories for CVE-2026-62643(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 9× in last 7d / 9× 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.

  1. 2026-07-16 00:40 UTCEG score recompute
  2. 2026-07-16 00:40 UTCGHSA enrichment
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 13:51 UTCEG score recompute
  5. 2026-07-15 13:50 UTCGHSA enrichment
  6. 2026-07-15 03:01 UTCEG score recompute
  7. 2026-07-15 03:01 UTCGHSA enrichment
  8. 2026-07-14 16:11 UTCEG score recompute
  9. 2026-07-14 16:10 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-62643?
CVE-2026-62643 is a high vulnerability published on July 14, 2026. In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. NOTE: this issue exists because of insufficient fixes for…
When was CVE-2026-62643 disclosed?
CVE-2026-62643 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-2026-62643 actively exploited?
CVE-2026-62643 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-62643?
CVE-2026-62643 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-62643?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62643, 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

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