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CVE-2026-48843

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:019f7123563cdee5d904204ff30ebcbf127f3562516536915916830fb4962101
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"Webmail","vendor":"Roundcube","versions":[{"lessThan":"1.6.16","status":"affected","version":"1.6.14","versionType":"semver"},{"lessThan":"1.7.1","status":"affected","version":"1.7.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3d5b98041dd3e097888878bd716fb6b14f7a9d4c0385b55ab5e6ba3c71662bd5 · sha256:dea31f825e59d1c3… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.2,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3d5b98041dd3e097888878bd716fb6b14f7a9d4c0385b55ab5e6ba3c71662bd5 · sha256:dea31f825e59d1c3… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-918","description":"CWE-918 Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3d5b98041dd3e097888878bd716fb6b14f7a9d4c0385b55ab5e6ba3c71662bd5 · sha256:dea31f825e59d1c3… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"url":"https://github.com/roundcube/roundcubemail/commit/ab96c88bfd888866ec5e02190b19618db283923a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3d5b98041dd3e097888878bd716fb6b14f7a9d4c0385b55ab5e6ba3c71662bd5 · sha256:dea31f825e59d1c3… · /containers/cna/references/2
{"url":"https://github.com/roundcube/roundcubemail/commit/cb3fc9041e91640ba9ba49ee7b2147c176ebf5a1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3d5b98041dd3e097888878bd716fb6b14f7a9d4c0385b55ab5e6ba3c71662bd5 · sha256:dea31f825e59d1c3… · /containers/cna/references/4
{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.16"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3d5b98041dd3e097888878bd716fb6b14f7a9d4c0385b55ab5e6ba3c71662bd5 · sha256:dea31f825e59d1c3… · /containers/cna/references/3
{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3d5b98041dd3e097888878bd716fb6b14f7a9d4c0385b55ab5e6ba3c71662bd5 · sha256:dea31f825e59d1c3… · /containers/cna/references/1
{"url":"https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3d5b98041dd3e097888878bd716fb6b14f7a9d4c0385b55ab5e6ba3c71662bd5 · sha256:dea31f825e59d1c3… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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