CVE-2026-26079

MEDIUMNVD 4.74.7
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 4.7 from GitHub Security Advisory published 2026-02-11. NVD baseline CVSS 4.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2026-5945 (ENISA EUVD) · GHSA-pw24-qgf8-7qm8 (GitHub Security Advisories)Source: ENISA EUVD

4.7EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 4.7Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Roundcube Webmail before 1.5.13 and 1.6 before 1.6.13 allows Cascading Style Sheets (CSS) injection, e.g., because comments are mishandled.

CVSS v3
4.7
EG Score
4.7MEDIUMmedium confidence
EG Risk
21
EG Risk 21/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity47% × 45%
Impact severity (EG Severity): CVSS 4.7 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
28th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (4.7): severity, escalated by confirmed exploitation. This CVE's 4.7 is its impact severity (EG Severity), not escalated.

EG Severity
4.7 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

February 11, 2026

Last Modified

June 17, 2026

Advisory Details (9)

Auto-updated Aug 9, 2026
Patch available. Sources: github_commit, github_release.
Web page

Security updates 1.6.13 and 1.5.13 released

https://roundcube.net/news/2026/02/08/security-updates-1.6.13-and-1.5.13
GitHub release Patch Available

Roundcube Webmail 1.6.13

Patch available: roundcube/roundcubemail 1.6.13

https://github.com/roundcube/roundcubemail/releases/tag/1.6.13
GitHub release Patch Available

Roundcube Webmail 1.5.13

Patch available: roundcube/roundcubemail 1.5.13

https://github.com/roundcube/roundcubemail/releases/tag/1.5.13
GitHub commit

commit c15f5dbf093a (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit c15f5dbf093a — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/c15f5dbf093a497e19a749b20e7f8fb5a9c24cde
GitHub commit

commit bf89cbaa5897 (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit bf89cbaa5897 — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/bf89cbaa5897d8ad62e8057d9a3f6babb90b7954
GitHub commit

commit 5a3315cce587 (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 5a3315cce587 — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/5a3315cce587e0be58335d11ff9a5571c90494a5
GitHub commit

commit 53d75d5dfebe (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 53d75d5dfebe — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/53d75d5dfebef235a344d476b900c20c12d52b01
GitHub commit

commit 2b5625f1d2ef (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 2b5625f1d2ef — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/2b5625f1d2ef7e050fd1ae481b2a52dc35466447
GitHub commit

commit 1f4c3a5af503 (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 1f4c3a5af503 — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/1f4c3a5af5033747f9685a8a395dbd8228d19816

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubunturoundcube-sqlite3 (1.3.6+dfsg.1-1ubuntu0.1~esm8) @ bionic2026-10-23ubuntu

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
roundcube1.4.11+dfsg.1-4 ... 1.4.15+dfsg.1-1~deb11u2~bpo10+1 (15 versions)
  • every version up to 1.4.15+dfsg.1-1+deb11u7: fixed in 1.4.15+dfsg.1-1+deb11u7
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
roundcube1.6.1+dfsg-1 ... 1.6.5+dfsg-1~deb12u1 (14 versions)
  • every version up to 1.6.5+dfsg-1+deb12u7: fixed in 1.6.5+dfsg-1+deb12u7
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
roundcube1.6.11+dfsg-1, 1.6.12+dfsg-0+deb13u1, 1.6.12+dfsg-1
  • every version up to 1.6.13+dfsg-0+deb13u1: fixed in 1.6.13+dfsg-0+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
roundcube1.6.11+dfsg-1, 1.6.12+dfsg-1
  • every version up to 1.6.13+dfsg-1: fixed in 1.6.13+dfsg-1
—

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 8× in last 7d / 40× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 98 of 243 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat. The 145 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  2. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  3. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  4. 2026-10-31 00:55 UTCOSV refresh
  5. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  6. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  7. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  8. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  9. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  10. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  11. 2026-10-25 14:39 UTCEG score recompute
  12. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  13. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  14. 2026-10-23 04:28 UTCEG score recompute
  15. 2026-10-23 04:28 UTCVendor advisory
  16. 2026-10-23 04:28 UTCGHSA enrichmentGHSA-pw24-qgf8-7qm8 · GitHub CVSS 4.7
  17. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  18. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  19. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  20. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  21. 2026-10-18 03:52 UTCEG score recompute
  22. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  23. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  24. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  25. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
Show 73 more
  1. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  3. 2026-10-12 16:18 UTCEG score recompute
  4. 2026-10-11 20:00 UTCEG score recompute
  5. 2026-10-11 17:14 UTCEG score recompute
  6. 2026-10-11 14:45 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  10. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  11. 2026-10-08 16:24 UTCOSV refresh
  12. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  13. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  14. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  15. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  16. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  17. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  19. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  20. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  21. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  22. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  23. 2026-09-18 22:12 UTCOSV refresh
  24. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  25. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  26. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  27. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  28. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  29. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  30. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  31. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  32. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  33. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  34. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  35. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  36. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  37. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  38. 2026-08-31 01:46 UTCOSV refresh
  39. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  40. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  41. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  42. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  43. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  44. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  45. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  46. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  47. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  48. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  49. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  50. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  51. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  52. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  53. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  54. 2026-08-14 10:28 UTCEG score recompute
  55. 2026-08-14 10:28 UTCVendor advisory
  56. 2026-08-14 10:28 UTCGHSA enrichmentGHSA-pw24-qgf8-7qm8 · GitHub CVSS 4.7
  57. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  58. 2026-08-13 02:45 UTCEG score recompute
  59. 2026-08-13 02:45 UTCVendor advisory
  60. 2026-08-13 02:45 UTCGHSA enrichmentGHSA-pw24-qgf8-7qm8 · GitHub CVSS 4.7
  61. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  62. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  63. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  64. 2026-08-09 15:11 UTCEG score recompute
  65. 2026-08-09 15:11 UTCVendor advisory
  66. 2026-08-09 15:11 UTCGHSA enrichmentGHSA-pw24-qgf8-7qm8 · GitHub CVSS 4.7
  67. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  68. 2026-08-07 22:16 UTCEG score recompute
  69. 2026-08-07 22:16 UTCVendor advisory
  70. 2026-08-07 22:16 UTCGHSA enrichmentGHSA-pw24-qgf8-7qm8 · GitHub CVSS 4.7
  71. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  72. 2026-08-06 04:02 UTCEG score recompute
  73. 2026-08-06 04:02 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-26079?
CVE-2026-26079 is a medium-severity vulnerability; its CVE record was published on February 11, 2026. Roundcube Webmail before 1.5.13 and 1.6 before 1.6.13 allows Cascading Style Sheets (CSS) injection, e.g., because comments are mishandled.
When was the CVE record for CVE-2026-26079 published?
The CVE record for CVE-2026-26079 was published on February 11, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of June 17, 2026; the record at its source may have been updated since.
Is CVE-2026-26079 actively exploited?
CVE-2026-26079 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (28th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-26079?
CVE-2026-26079 has a CVSS v3 base score of 4.7 (NVD).
How do I remediate CVE-2026-26079?
A fix for CVE-2026-26079 is available: update to the fixed version the vendor names in its advisory.

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