CVE-2021-44026

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-06-22), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 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
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 42%CVSS: 9.8Exploit: cisa kev · ssvc active · epss top5pctExposed: 0

A fix is available — apply it.

Roundcube before 1.3.17 and 1.4.x before 1.4.12 is prone to a potential SQL injection via search or search_params.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

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
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
42%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

November 19, 2021

Last Modified

November 4, 2025

Advisory Details (7)

Auto-updated Sep 3, 2026
Patch available. Sources: github_commit.
github_commit

commit ee809bde2dca (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit ee809bde2dca — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/ee809bde2dcaa04857a919397808a7296681dcfa
github_commit

commit c8947ecb762d (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit c8947ecb762d — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/c8947ecb762d9e89c2091bda28d49002817263f1
generic Patch Available

#1000156 - roundcube: XSS vulnerability in handling attachment filename extension in MIME type mismatch warnings - Debian Bug report logs

https://bugs.debian.org/1000156
generic

[SECURITY] [DSA 5013-1] roundcube security update

https://www.debian.org/security/2021/dsa-5013
generic

[SECURITY] Fedora 34 Update: roundcubemail-1.4.12-1.fc34 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TP3Y5RXTUUOUODNG7HFEKWYNIPIT2NL4/
generic

[SECURITY] Fedora 33 Update: roundcubemail-1.4.12-1.fc33 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NDVGIZMQJ5IOM47Y3SAAJRN5VPANKTKO/
generic Patch Available

[SECURITY] [DLA 2840-1] roundcube security update

https://lists.debian.org/debian-lts-announce/2021/12/msg00004.html

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubunturoundcube-sqlite3 (1.2~beta+dfsg.1-0ubuntu1+esm2) @ xenial2026-09-08ubuntu

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.

Affected Packages

(6 across 6 ecosystems)
Debian:10(1)
PackageVulnerable rangeFixed inDependents
roundcube1.3.10+dfsg.1-1 ... 1.3.8+dfsg.1-2 (8 versions)1.3.17+dfsg.1-1~deb10u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
roundcube1.4.11+dfsg.1-4, 1.4.12+dfsg.1-1~bpo10+11.4.12+dfsg.1-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
roundcube—1.5.0+dfsg.1-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
roundcube—1.5.0+dfsg.1-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
roundcube—1.5.0+dfsg.1-1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
roundcube1.2.3+dfsg.1-4 ... 1.2.3+dfsg.1-4+deb9u8 (9 versions)1.2.3+dfsg.1-4+deb9u9—

Weakness Classification(1)

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 78× in last 7d / 394× 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 1,241 total refreshes for this CVE.

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

Frequently asked(6)

What is CVE-2021-44026?
CVE-2021-44026 is a critical vulnerability published on November 19, 2021. Roundcube before 1.3.17 and 1.4.x before 1.4.12 is prone to a potential SQL injection via search or search_params.
When was CVE-2021-44026 disclosed?
CVE-2021-44026 was first published in the National Vulnerability Database on November 19, 2021, 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-2021-44026 actively exploited?
Yes. CISA added CVE-2021-44026 to the Known Exploited Vulnerabilities catalog on June 22, 2023, affecting Roundcube Roundcube Webmail. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2021-44026?
CVE-2021-44026 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2021-44026?
CVE-2021-44026 affects Roundcube 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-2021-44026?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-44026, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-44026

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