CVE-2026-32933 json
AutoMapper Vulnerable to Denial of Service (DoS) via Uncontrolled Recursion
published 2026-03-13 7 mo ago modified 2026-09-10 1 mo ago also GHSA-rvv3-g6hj-g44x , EUVD-2026-13505
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 47%
- public exploits
- 0
- none known
Summary
AutoMapper is a convention-based object-object mapper in .NET. Versions prior to 15.1.1 and 16.1.1 are vulnerable to a Denial of Service (DoS) attack. When mapping deeply nested object graphs, the library uses recursive method calls without enforcing a default maximum depth limit. This allows an attacker to provide a specially crafted object graph that exhausts the thread's stack memory, triggering a `StackOverflowException` and causing the entire application process to terminate. Versions 15.1.1 and 16.1.1 fix the issue.
Patch / fix
- nuget AutoMapper 15.1.1, 16.1.1
- luckypennysoftware automapper 15.1.1, 16.1.1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.56% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/LuckyPennySoftware/AutoMapper/security/advisories/GHSA-rvv3-g6hj-g44x referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | AutoMapper | >=16.0.0, <16.1.1 <15.1.1 |
16.1.1 15.1.1 |
Affected products
- LuckyPennySoftware AutoMapper
Classification
- Weakness
-
- CWE-674 Uncontrolled Recursion
References
-
github.com
/LuckyPennySoftware/AutoMapper/commit/0afaf1e91648fca1a57512e94dd00a76ee016816
web, patch
-
github.com
/LuckyPennySoftware/AutoMapper/security/advisories/GHSA-rvv3-g6hj-g44x
web, exploit, vendor-advisory
-
github.com
/LuckyPennySoftware/AutoMapper/releases/tag/v15.1.1
web, release-notes
-
github.com
/LuckyPennySoftware/AutoMapper/releases/tag/v16.1.1
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-32933
advisory
-
github.com
/LuckyPennySoftware/AutoMapper
package
-
github.com
/LuckyPennySoftware/AutoMapper/discussions/4624
web
Sources
- CVE List CVE-2026-32933
- GitHub Advisory GHSA-rvv3-g6hj-g44x
- NVD CVE-2026-32933
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