CSRF in Wordplus Better Messages
CVE-2021-24809
The BP Better Messages WordPress plugin before 1.9.9.41 does not check for CSRF in multiple of its AJAX actions: bp_better_messages_leave_chat, bp_better_messages_join_chat, bp_messages_leave_thread, bp_messages_mute_thread, bp_messages_unmute_thread, bp_better_messages_add_user_to_thread, bp_better_messages_exclude_user_from_thread. This could allow attackers to make logged in users do unwanted actions
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Wordplus Better Messages
- Bp Better Messages — versions 1.9.9.41
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wpscan.com/vulnerability/e186fef4-dca0-461f-b539-082c13a68d13 (Exploit, Third Party Advisory)
- plugins.trac.wordpress.org/changeset/2605772/bp-better-messages/trunk/inc/ajax… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-24809?
- CVE-2021-24809 is a high-severity vulnerability in Wordplus Better Messages, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-11-01.
- How severe is CVE-2021-24809?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-24809 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.