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 (1.2~beta+dfsg.1-0ubuntu1+esm2) @ xenial2026-07-21ubuntu

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 71× in last 7d / 316× 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 580 total refreshes for this CVE.

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

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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