Roundcube Webmail 1.6.x between 1.6.14 and 1.6.16,and 1.7.x before 1.7.1 has Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. The issue stems from an insufficient fix for CVE-2026-35540.
CVE-2026-48843
“—” beside the score: it is equal to NVD's CVSS score.
Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-05-26. NVD baseline CVSS 7.2; sources differ by 0.0.
Also known asEUVD-2026-31718 (ENISA EUVD) · GHSA-2hww-8583-w9wf (GitHub Security Advisories)Source: ENISA EUVD
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.2
- EG Score
- 7.2HIGHmedium confidence
- EG Risk
- 48EG Risk 48/100
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)Severity72% × 45%Impact severity (EG Severity): CVSS 7.2 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.3% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high. - EPSS PROB
- 0.3%
- EPSS %ILE
- 18th
- 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 (7.2): severity, escalated by confirmed exploitation. This CVE's 7.2 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.2 HIGHCVSS-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 (model v2026.06.15, score date 2026-10-30). 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 low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable yes (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
May 25, 2026
Last Modified
July 24, 2026
Advisory Details (5)
Auto-updated Jun 11, 2026Security updates 1.6.16 and 1.7.1 released
https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1Roundcube Webmail 1.7.1
Patch available: roundcube/roundcubemail 1.7.1
https://github.com/roundcube/roundcubemail/releases/tag/1.7.1Roundcube Webmail 1.6.16
Patch available: roundcube/roundcubemail 1.6.16
https://github.com/roundcube/roundcubemail/releases/tag/1.6.16commit cb3fc9041e91 (roundcube/roundcubemail)
Fix landed in roundcube/roundcubemail commit cb3fc9041e91 — awaiting tagged release
https://github.com/roundcube/roundcubemail/commit/cb3fc9041e91640ba9ba49ee7b2147c176ebf5a1commit ab96c88bfd88 (roundcube/roundcubemail)
Fix landed in roundcube/roundcubemail commit ab96c88bfd88 — awaiting tagged release
https://github.com/roundcube/roundcubemail/commit/ab96c88bfd888866ec5e02190b19618db283923aVendor Advisories for CVE-2026-48843(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
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 (17 versions) |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| roundcube | 1.6.1+dfsg-1 ... 1.6.5+dfsg-1~deb12u1 (16 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| roundcube | 1.6.11+dfsg-1 ... 1.6.15+dfsg-1 (8 versions) |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| roundcube | 1.6.11+dfsg-1, 1.6.12+dfsg-1, 1.6.13+dfsg-1, 1.6.14+dfsg-1, 1.6.15+dfsg-1 |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 41× 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 100 of 272 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. None are among the latest 100 rows. The 172 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-30 18:13 UTCEG score recompute
- 2026-10-30 18:13 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-10-25 14:23 UTCEG score recompute
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-24 03:14 UTCEG score recompute
- 2026-10-24 03:14 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-18 03:34 UTCEG score recompute
- 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-17 12:14 UTCEG score recompute
- 2026-10-17 12:14 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
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- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-12 16:00 UTCEG score recompute
- 2026-10-11 19:43 UTCEG score recompute
- 2026-10-11 16:58 UTCEG score recompute
- 2026-10-11 14:22 UTCEG score recompute
- 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 37th percentile
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 37th percentile
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 37th percentile
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 37th percentile
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 37th percentile
- 2026-09-30 02:10 UTCOSV refresh
- 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 37th percentile
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 37th percentile
- 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.5% · 37th percentile
- 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.3% · 19th percentile
- 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 19th percentile
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 19th percentile
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 19th percentile
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-09-11 03:23 UTCOSV refresh
- 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-08-23 16:29 UTCEG score recompute
- 2026-08-23 16:29 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 19th percentile
- 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
- 2026-08-21 21:33 UTCEG score recompute
- 2026-08-21 21:33 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 19th percentile
- 2026-08-20 18:24 UTCEG score recompute
- 2026-08-20 18:24 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 19th percentile
- 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-08-17 09:38 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-08-16 16:45 UTCEG score recompute
- 2026-08-16 16:45 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 19th percentile
- 2026-08-16 03:11 UTCEG score recompute
- 2026-08-16 03:11 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 19th percentile
- 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-08-15 00:41 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-08-14 13:14 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-08-14 01:47 UTCEG score recompute
- 2026-08-14 01:47 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-08-13 01:37 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-08-12 14:10 UTCEG score recompute
- 2026-08-12 14:10 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-08-12 01:09 UTCGHSA enrichmentGHSA-2hww-8583-w9wf · GitHub severity HIGH · GitHub CVSS 7.2
- 2026-08-11 13:43 UTCEG score recompute
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Frequently asked(5)
What is CVE-2026-48843?
When was the CVE record for CVE-2026-48843 published?
Is CVE-2026-48843 actively exploited?
What is the CVSS score of CVE-2026-48843?
How do I remediate CVE-2026-48843?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-48843
Is Your Infrastructure Affected by CVE-2026-48843?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.