CVE-2026-75006

MEDIUMPre-NVD 5.85.8—
EchelonGraph scoreMEDIUM confidence

Score 5.8 from GitHub Security Advisory published 2026-08-17. A secondary CVSS source baseline 5.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 5.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, 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. This issue exists because of insufficient fixes for CVE-2026-35540, CVE-2026-48843 and CVE-2026-62643.

CVSS v3
5.8
EG Score
5.8MEDIUMmedium confidence
EG Risk
41
EG Risk 41/100CISA SSVC

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
Severity58% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
44th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 17, 2026

Last Modified

September 8, 2026

Advisory Details (5)

Auto-updated Aug 17, 2026
Patch available. Sources: github_commit.
generic

Security updates 1.6.18 and 1.7.3 released

https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3
github_commit

commit c111b72950cd (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit c111b72950cd — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/c111b72950cd2bf57d6b86cd129568d90403322d
github_commit

commit 92f85c883594 (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 92f85c883594 — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/92f85c883594e5be757154f94548a9ba903455c9
github_commit

commit 8a92380b06b5 (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 8a92380b06b5 — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/8a92380b06b5df1481e034c4f40d6a6546c21223
github_commit

commit 7e10ca0110b7 (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 7e10ca0110b7 — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/7e10ca0110b7c9aa1b7850b843bb6625e47bbe00

Vendor Advisories for CVE-2026-75006(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
roundcube1.6.1+dfsg-1 ... 1.6.5+dfsg-1~deb12u1 (18 versions)
  • every version up to 1.6.5+dfsg-1+deb12u11: fixed in 1.6.5+dfsg-1+deb12u11
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
roundcube1.6.11+dfsg-1 ... 1.6.17+dfsg-1 (12 versions)
  • every version up to 1.6.18+dfsg-0+deb13u1: fixed in 1.6.18+dfsg-0+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
roundcube1.6.11+dfsg-1 ... 1.6.17+dfsg-1 (7 versions)
  • every version up to 1.6.18+dfsg-1: fixed in 1.6.18+dfsg-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 77× 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 137 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-75006?
CVE-2026-75006 is a medium vulnerability published on August 17, 2026. In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, 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. This issue exists because of insufficient fixes for…
When was CVE-2026-75006 disclosed?
CVE-2026-75006 was first published on August 17, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75006 actively exploited?
CVE-2026-75006 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (44th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75006?
CVE-2026-75006 has a CVSS base score of 5.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75006?
A fix for CVE-2026-75006 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75006 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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