CVE-2021-40110 json
Apache James IMAP vulnerable to a ReDoS
published 2022-01-04 4 y ago modified 2026-09-10 1 mo ago also GHSA-r58x-wjg8-63m9 , EUVD-2022-0682
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.0%
- EPSS 3.0% chance of exploitation in 30 days, percentile 87%
- public exploits
- 0
- none known
Summary
In Apache James, using Jazzer fuzzer, we identified that an IMAP user can craft IMAP LIST commands to orchestrate a Denial Of Service using a vulnerable Regular expression. This affected Apache James prior to 3.6.1 We recommend upgrading to Apache James 3.6.1 or higher , which enforce the use of RE2J regular expression engine to execute regex in linear time without back-tracking.
Patch / fix
- maven org.apache.james:james-server 3.6.1
- apache james 3.6.1
Exploit prediction
2.95% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.apache.james:james-server | >=3.1.0, <3.6.1 |
3.6.1 |
Affected products
- Apache Software Foundation Apache James
References
-
openwall.com
/lists/oss-security/2022/01/04/2
web, mailing-list, third-party-advisory
-
openwall.com
/lists/oss-security/2022/01/04/2
mailing-list, web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-40110
advisory
Sources
- CVE List CVE-2021-40110
- GitHub Advisory GHSA-r58x-wjg8-63m9
- NVD CVE-2021-40110
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