CVE-2026-62643

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 63% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 10.0Exploit: None knownExposed: 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
10.0
EG Score
10.0(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

July 14, 2026

Last Modified

July 20, 2026

Advisory Details (5)

Auto-updated Aug 25, 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.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
roundcube1.4.11+dfsg.1-4 ... 1.4.15+dfsg.1-1~deb11u2~bpo10+1 (18 versions)1.4.15+dfsg.1-1+deb11u10—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
roundcube1.6.1+dfsg-1 ... 1.6.5+dfsg-1~deb12u1 (17 versions)1.6.5+dfsg-1+deb12u10—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
roundcube1.6.11+dfsg-1 ... 1.6.16+dfsg-1 (10 versions)1.6.17+dfsg-0+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
roundcube1.6.11+dfsg-1 ... 1.6.16+dfsg-1 (6 versions)1.6.17+dfsg-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 33× in last 7d / 214× 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.

Showing the most recent 100 of 282 total refreshes for this CVE.

  1. 2026-08-30 05:24 UTCEG score recompute
  2. 2026-08-30 05:24 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-28 21:42 UTCEPSS rescore
  5. 2026-08-28 02:02 UTCGHSA enrichment
  6. 2026-08-27 21:33 UTCEG score recompute
  7. 2026-08-27 21:33 UTCGHSA enrichment
  8. 2026-08-27 14:25 UTCEPSS rescore
  9. 2026-08-27 13:51 UTCGHSA enrichment
  10. 2026-08-27 03:44 UTCGHSA enrichment
  11. 2026-08-26 23:36 UTCEG score recompute
  12. 2026-08-26 23:36 UTCGHSA enrichment
  13. 2026-08-26 14:46 UTCEPSS rescore
  14. 2026-08-26 12:15 UTCGHSA enrichment
  15. 2026-08-26 05:59 UTCGHSA enrichment
  16. 2026-08-26 01:44 UTCGHSA enrichment
  17. 2026-08-25 15:50 UTCEG score recompute
  18. 2026-08-25 15:49 UTCGHSA enrichment
  19. 2026-08-25 13:49 UTCEPSS rescore
  20. 2026-08-25 11:15 UTCGHSA enrichment
  21. 2026-08-25 07:22 UTCGHSA enrichment
  22. 2026-08-25 03:31 UTCGHSA enrichment
  23. 2026-08-24 23:40 UTCGHSA enrichment
  24. 2026-08-24 19:49 UTCEG score recompute
  25. 2026-08-24 19:49 UTCGHSA enrichment
Show 75 more
  1. 2026-08-24 12:36 UTCEG score recompute
  2. 2026-08-24 12:36 UTCGHSA enrichment
  3. 2026-08-24 08:09 UTCGHSA enrichment
  4. 2026-08-24 03:48 UTCGHSA enrichment
  5. 2026-08-23 21:59 UTCGHSA enrichment
  6. 2026-08-23 18:08 UTCGHSA enrichment
  7. 2026-08-23 14:16 UTCGHSA enrichment
  8. 2026-08-23 10:25 UTCGHSA enrichment
  9. 2026-08-23 06:32 UTCGHSA enrichment
  10. 2026-08-23 02:39 UTCEG score recompute
  11. 2026-08-23 02:39 UTCGHSA enrichment
  12. 2026-08-23 00:19 UTCEPSS rescore
  13. 2026-08-22 22:48 UTCGHSA enrichment
  14. 2026-08-22 18:56 UTCGHSA enrichment
  15. 2026-08-22 15:01 UTCGHSA enrichment
  16. 2026-08-22 11:08 UTCGHSA enrichment
  17. 2026-08-22 07:15 UTCGHSA enrichment
  18. 2026-08-22 03:23 UTCEG score recompute
  19. 2026-08-22 03:23 UTCGHSA enrichment
  20. 2026-08-21 23:49 UTCEPSS rescore
  21. 2026-08-21 23:29 UTCGHSA enrichment
  22. 2026-08-21 19:33 UTCGHSA enrichment
  23. 2026-08-21 15:42 UTCGHSA enrichment
  24. 2026-08-21 11:48 UTCGHSA enrichment
  25. 2026-08-21 07:37 UTCGHSA enrichment
  26. 2026-08-21 03:45 UTCGHSA enrichment
  27. 2026-08-20 23:54 UTCEG score recompute
  28. 2026-08-20 23:54 UTCGHSA enrichment
  29. 2026-08-20 22:55 UTCEPSS rescore
  30. 2026-08-20 20:02 UTCGHSA enrichment
  31. 2026-08-20 16:10 UTCGHSA enrichment
  32. 2026-08-20 12:17 UTCGHSA enrichment
  33. 2026-08-20 08:16 UTCGHSA enrichment
  34. 2026-08-20 04:25 UTCGHSA enrichment
  35. 2026-08-20 00:33 UTCEG score recompute
  36. 2026-08-20 00:33 UTCGHSA enrichment
  37. 2026-08-19 17:04 UTCEPSS rescore
  38. 2026-08-19 16:23 UTCGHSA enrichment
  39. 2026-08-19 12:16 UTCGHSA enrichment
  40. 2026-08-19 07:45 UTCGHSA enrichment
  41. 2026-08-19 03:53 UTCGHSA enrichment
  42. 2026-08-18 23:56 UTCGHSA enrichment
  43. 2026-08-18 20:04 UTCEG score recompute
  44. 2026-08-18 20:04 UTCGHSA enrichment
  45. 2026-08-18 13:48 UTCEPSS rescore
  46. 2026-08-18 10:23 UTCGHSA enrichment
  47. 2026-08-18 06:30 UTCGHSA enrichment
  48. 2026-08-18 02:39 UTCGHSA enrichment
  49. 2026-08-17 21:29 UTCEG score recompute
  50. 2026-08-17 21:29 UTCGHSA enrichment
  51. 2026-08-17 13:47 UTCEPSS rescore
  52. 2026-08-17 13:36 UTCGHSA enrichment
  53. 2026-08-17 09:44 UTCGHSA enrichment
  54. 2026-08-17 05:53 UTCGHSA enrichment
  55. 2026-08-17 02:01 UTCGHSA enrichment
  56. 2026-08-16 22:10 UTCGHSA enrichment
  57. 2026-08-16 18:18 UTCEG score recompute
  58. 2026-08-16 18:18 UTCGHSA enrichment
  59. 2026-08-16 14:56 UTCEPSS rescore
  60. 2026-08-16 14:27 UTCGHSA enrichment
  61. 2026-08-16 10:35 UTCGHSA enrichment
  62. 2026-08-16 06:42 UTCGHSA enrichment
  63. 2026-08-16 02:51 UTCEG score recompute
  64. 2026-08-16 02:51 UTCGHSA enrichment
  65. 2026-08-15 23:00 UTCGHSA enrichment
  66. 2026-08-15 19:09 UTCGHSA enrichment
  67. 2026-08-15 15:18 UTCGHSA enrichment
  68. 2026-08-15 11:27 UTCGHSA enrichment
  69. 2026-08-15 07:36 UTCGHSA enrichment
  70. 2026-08-15 02:48 UTCEG score recompute
  71. 2026-08-15 02:48 UTCGHSA enrichment
  72. 2026-08-15 01:30 UTCEPSS rescore
  73. 2026-08-14 22:56 UTCGHSA enrichment
  74. 2026-08-14 19:05 UTCGHSA enrichment
  75. 2026-08-14 15:14 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-62643?
CVE-2026-62643 is a critical 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 20, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 63.4% of all scored CVEs.
What is the CVSS score of CVE-2026-62643?
CVE-2026-62643 has a CVSS v3 base score of 10.0 (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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