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.
CVE-2026-26079
“—” 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.
Also known asEUVD-2026-5945 (ENISA EUVD) · GHSA-pw24-qgf8-7qm8 (GitHub Security Advisories)Source: ENISA EUVD
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 4.7
- EG Score
- 4.7MEDIUMmedium confidence
- EG Risk
- 21EG 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, 2026Security updates 1.6.13 and 1.5.13 released
https://roundcube.net/news/2026/02/08/security-updates-1.6.13-and-1.5.13Roundcube Webmail 1.6.13
Patch available: roundcube/roundcubemail 1.6.13
https://github.com/roundcube/roundcubemail/releases/tag/1.6.13Roundcube Webmail 1.5.13
Patch available: roundcube/roundcubemail 1.5.13
https://github.com/roundcube/roundcubemail/releases/tag/1.5.13commit c15f5dbf093a (roundcube/roundcubemail)
Fix landed in roundcube/roundcubemail commit c15f5dbf093a — awaiting tagged release
https://github.com/roundcube/roundcubemail/commit/c15f5dbf093a497e19a749b20e7f8fb5a9c24cdecommit bf89cbaa5897 (roundcube/roundcubemail)
Fix landed in roundcube/roundcubemail commit bf89cbaa5897 — awaiting tagged release
https://github.com/roundcube/roundcubemail/commit/bf89cbaa5897d8ad62e8057d9a3f6babb90b7954commit 5a3315cce587 (roundcube/roundcubemail)
Fix landed in roundcube/roundcubemail commit 5a3315cce587 — awaiting tagged release
https://github.com/roundcube/roundcubemail/commit/5a3315cce587e0be58335d11ff9a5571c90494a5commit 53d75d5dfebe (roundcube/roundcubemail)
Fix landed in roundcube/roundcubemail commit 53d75d5dfebe — awaiting tagged release
https://github.com/roundcube/roundcubemail/commit/53d75d5dfebef235a344d476b900c20c12d52b01commit 2b5625f1d2ef (roundcube/roundcubemail)
Fix landed in roundcube/roundcubemail commit 2b5625f1d2ef — awaiting tagged release
https://github.com/roundcube/roundcubemail/commit/2b5625f1d2ef7e050fd1ae481b2a52dc35466447commit 1f4c3a5af503 (roundcube/roundcubemail)
Fix landed in roundcube/roundcubemail commit 1f4c3a5af503 — awaiting tagged release
https://github.com/roundcube/roundcubemail/commit/1f4c3a5af5033747f9685a8a395dbd8228d19816Patch Availability(1)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | roundcube-sqlite3 (1.3.6+dfsg.1-1ubuntu0.1~esm8) @ bionic | 2026-10-23 | ubuntu |
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)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| roundcube | 1.4.11+dfsg.1-4 ... 1.4.15+dfsg.1-1~deb11u2~bpo10+1 (15 versions) |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| roundcube | 1.6.1+dfsg-1 ... 1.6.5+dfsg-1~deb12u1 (14 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| roundcube | 1.6.11+dfsg-1, 1.6.12+dfsg-0+deb13u1, 1.6.12+dfsg-1 |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| roundcube | 1.6.11+dfsg-1, 1.6.12+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 242 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 144 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-10-31 00:55 UTCOSV refresh
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-10-25 14:39 UTCEG score recompute
- 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-23 04:28 UTCEG score recompute
- 2026-10-23 04:28 UTCVendor advisory
- 2026-10-23 04:28 UTCGHSA enrichmentGHSA-pw24-qgf8-7qm8 · GitHub CVSS 4.7
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-18 03:52 UTCEG score recompute
- 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
- 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
- 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
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- 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
- 2026-10-12 16:18 UTCEG score recompute
- 2026-10-11 20:00 UTCEG score recompute
- 2026-10-11 17:14 UTCEG score recompute
- 2026-10-11 14:45 UTCEG score recompute
- 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 46th percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 46th percentile
- 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-08 16:24 UTCOSV refresh
- 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-09-18 22:12 UTCOSV refresh
- 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
- 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
- 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
- 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-31 01:46 UTCOSV refresh
- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-14 10:28 UTCEG score recompute
- 2026-08-14 10:28 UTCVendor advisory
- 2026-08-14 10:28 UTCGHSA enrichmentGHSA-pw24-qgf8-7qm8 · GitHub CVSS 4.7
- 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-13 02:45 UTCEG score recompute
- 2026-08-13 02:45 UTCVendor advisory
- 2026-08-13 02:45 UTCGHSA enrichmentGHSA-pw24-qgf8-7qm8 · GitHub CVSS 4.7
- 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-09 15:11 UTCEG score recompute
- 2026-08-09 15:11 UTCVendor advisory
- 2026-08-09 15:11 UTCGHSA enrichmentGHSA-pw24-qgf8-7qm8 · GitHub CVSS 4.7
- 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-07 22:16 UTCEG score recompute
- 2026-08-07 22:16 UTCVendor advisory
- 2026-08-07 22:16 UTCGHSA enrichmentGHSA-pw24-qgf8-7qm8 · GitHub CVSS 4.7
- 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.3% · 21st percentile
- 2026-08-06 04:02 UTCEG score recompute
- 2026-08-06 04:02 UTCVendor advisory
- 2026-08-06 04:02 UTCGHSA enrichmentGHSA-pw24-qgf8-7qm8 · GitHub CVSS 4.7
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Frequently asked(5)
What is CVE-2026-26079?
When was the CVE record for CVE-2026-26079 published?
Is CVE-2026-26079 actively exploited?
What is the CVSS score of CVE-2026-26079?
How do I remediate CVE-2026-26079?
Dependency Blast Radius
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