CVE Explorer

CVE-2026-47733

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, the ImageElement component in packages/gazzodown renders user-controlled src values directly into <a href> and <img src> attributes without protocol sanitization. Unlike the analogous LinkSpan component — which uses sanitizeUrl to block javascript:, data:, and vbscript: protocols — ImageElement passes the raw URL through unchanged. An authenticated user can post a markdown image with a javascript:

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:150cb9010c0c24351c9421573a18dbf3811d794494751657107cbc0c8507621a

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"Rocket.Chat","vendor":"RocketChat","versions":[{"status":"affected","version":"< 8.5.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:4de4c2b5b853ebf004ffd62594039b48e3539f7220d110a89e4e190b82a57893 · sha256:449e511f287e2e6e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:4de4c2b5b853ebf004ffd62594039b48e3539f7220d110a89e4e190b82a57893 · sha256:449e511f287e2e6e… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:4de4c2b5b853ebf004ffd62594039b48e3539f7220d110a89e4e190b82a57893 · sha256:449e511f287e2e6e… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"tags":["exploit"],"url":"https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-vvrf-fq54-q4pr"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4de4c2b5b853ebf004ffd62594039b48e3539f7220d110a89e4e190b82a57893 · sha256:449e511f287e2e6e… · /containers/adp/0/references/0

{"name":"https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-vvrf-fq54-q4pr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-vvrf-fq54-q4pr"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4de4c2b5b853ebf004ffd62594039b48e3539f7220d110a89e4e190b82a57893 · sha256:449e511f287e2e6e… · /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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