CVE-2026-9497 changmingxie tcc-transaction Fastjson AutoType REST API Fastjson.parseObject deserialization
Remote attackers can exploit unsafe Fastjson deserialization in tcc-transaction to execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-9497?
CVE-2026-9497 is a medium-severity unsafe deserialization vulnerability in changmingxie tcc-transaction, published on 25 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw has been found in changmingxie tcc-transaction up to 2.1.0. This issue affects the function Fastjson.parseObject of the component Fastjson AutoType REST API. This manipulation causes deserialization. It is possible to initiate the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-9497?
2 open source packages ship an affected version, including org.mengyun:tcc-transaction.
| Package | Affected | Fixed in |
|---|---|---|
org.mengyun:tcc-transaction Maven | All versions to 2.1.0 | None |
org.mengyun:tcc-transaction Maven | All versions to 2.1.0 | None |
How do I fix CVE-2026-9497?
No fix has been published for CVE-2026-9497 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-9497 being exploited?
There is no known exploitation of CVE-2026-9497 in the wild and no public exploit code.
Sources
Also known as GHSA-4r4v-3jc5-hrg9.