critical Known exploitedREV. 01
CVE-2024-42009Roundcube Webmail — message body injection steals mail
Roundcube through 1.5.7 and 1.6.7 undoes its own sanitising when it renders a message body, so opening a crafted e-mail runs the sender's script and lets them read and send mail as the victim.
Read the risk
THE VITAL STATS- CVSS score
- 9.3/ 10 CVSS v3.1
- EPSS probability
- 83% Likelihood of exploitation
- Attack complexity
- Low Conditions needed to exploit
- Known exploited
- Yes — CISA KEV
- CVE published
- 2024-08-05
- Added to KEV
- 2025-06-09
- Exploit published
- Not recorded
- Confidence
- high
- Kill chain
- execution
- MITRE ATT&CK
- T1059.007
- Severity
- critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Attacker needsThe victim must open the crafted message in Roundcube.
Fixed inRoundcube Webmail 1.5.8, Roundcube Webmail 1.6.8
Behind the card
4 REFERENCES- 01CVE recordNVD recordnvd.nist.gov
- 02CISACISA Known Exploited Vulnerabilities catalogcisa.gov
- 03Vendor advisoryroundcube.netroundcube.net
- 04Writeupsonarsource.comsonarsource.com
Field-level provenanceTRACE THE SOURCES +
Which source supports each field, when it was retrieved, and who extracted it.
| Fields | Source | Retrieved | Extractor | Confidence |
|---|---|---|---|---|
| cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_at | nvd.nist.gov | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| exploitation.known_exploited, exploitation.kev_added | cisa.gov | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| epss | api.first.org | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisites | nvd.nist.gov | 2026-09-24 | claude-code | high |
Printing history
THE RECORD- r1Initial base card
First printing. This card has not been reprinted since publication.