CVE-2020-13965

MEDIUMNVD 6.19.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2024-06-26), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 6.1 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
6.1
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 77%CVSS: 6.1Exploit: NoneExposed: 0

A fix is available — apply it.

An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. There is XSS via a malicious XML attachment because text/xml is among the allowed types for a preview.

CVSS v3
6.1
EG Score
9.0(high)
EPSS
99.5%
KEV
⚠ Exploited

Published

June 9, 2020

Last Modified

November 4, 2025

Advisory Details (9)

Auto-updated Jun 13, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release.
generic🟡 PoC Available

Disclosures/CVE-2020-13965-Cross Site-Scripting via Malicious XML Attachment-Roundcube at master · DrunkenShells/Disclosures · GitHub

https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-13965-Cross%20Site-Scripting%20via%20Malicious%20XML%20Attachment-Roundcube
generic

[SECURITY] [DSA 4700-1] roundcube security update

https://www.debian.org/security/2020/dsa-4700
generic

Security updates 1.4.5 and 1.3.12 released

https://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12
generic

[SECURITY] Fedora 32 Update: roundcubemail-1.4.6-1.fc32 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODPJXBHZ32QSP4MYT2OBCALYXSUJ47SK/
generic

[SECURITY] Fedora 31 Update: roundcubemail-1.4.6-1.fc31 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLESQ4LPJGMSWHQ4TBRTVQRDG7IXAZCW/
github_release Patch Available

Roundcube Webmail 1.4.5

Patch available: roundcube/roundcubemail 1.4.5

https://github.com/roundcube/roundcubemail/releases/tag/1.4.5
github_release Patch Available

Roundcube Webmail 1.3.12

Patch available: roundcube/roundcubemail 1.3.12

https://github.com/roundcube/roundcubemail/releases/tag/1.3.12
generic

Comparing 1.4.4...1.4.5 · roundcube/roundcubemail · GitHub

https://github.com/roundcube/roundcubemail/compare/1.4.4...1.4.5
github_commit

commit 884eb611627e (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 884eb611627e — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/884eb611627ef2bd5a2e20e02009ebb1eceecdc3

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubunturoundcube-sqlite3 (1.5.0+dfsg.1-2ubuntu0.1~esm1) @ jammy2026-07-16ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 112× in last 7d / 474× 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 759 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2020-13965?
CVE-2020-13965 is a medium vulnerability published on June 9, 2020. An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. There is XSS via a malicious XML attachment because text/xml is among the allowed types for a preview.
When was CVE-2020-13965 disclosed?
CVE-2020-13965 was first published in the National Vulnerability Database on June 9, 2020, with the most recent update on November 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-13965 actively exploited?
Yes. CISA added CVE-2020-13965 to the Known Exploited Vulnerabilities catalog on June 26, 2024, affecting Roundcube Webmail. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2020-13965?
CVE-2020-13965 has a CVSS v3 base score of 6.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2020-13965?
CVE-2020-13965 affects Roundcube Webmail. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2020-13965?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-13965, 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.

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