CVE-2020-35730

high KEV

Published 2023-06-22 · Modified 2023-06-22

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

9.5

Description

Roundcube Webmail contains a cross-site scripting (XSS) vulnerability that allows an attacker to send a plain text e-mail message with Javascript in a link reference element that is mishandled by linkref_addinindex in rcube_string_replacer.php.

CISA KEV

Vendor: Roundcube
Product: Roundcube Webmail
Due date: 2023-07-13

Predictions

Exploit likelihood

99%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

OS impact

Arch Fixed 1 release

Version	Status	Fixed in
—	Fixed	`1.4.10-1`

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`1.4.10+dfsg.1-1`
sid	Fixed	`1.4.10+dfsg.1-1`
forky	Fixed	`1.4.10+dfsg.1-1`
bullseye	Fixed	`1.4.10+dfsg.1-1`
bookworm	Fixed	`1.4.10+dfsg.1-1`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.