Deserialization in Devcode Openstamanager
CVE-2026-29782
OpenSTAManager is an open source management software for technical assistance and invoicing. Prior to version 2.10.2, the oauth2.php file in OpenSTAManager is an unauthenticated endpoint ($skip_permissions = true). It loads a record from the zz_oauth2 table using the attacker-controlled GET parameter state, and during the OAuth2 configuration flow calls unserialize() on the access_token field without any class restriction. This issue has been patched in version 2.10.2.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.001
Affected products
- Devcode Openstamanager
- Devcode-It Openstamanager — versions < 2.10.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/devcode-it/openstamanager/security/advisories/GHSA-whv5-4q2f-q68g (Exploit, Mitigation, Vendor Advisory)
- github.com/devcode-it/openstamanager/commit/d2e38cbdf91a831cefc0da1548e02b297ae… (Patch)
- github.com/devcode-it/openstamanager/releases/tag/v2.10.2 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-29782?
- CVE-2026-29782 is a high-severity vulnerability in Devcode Openstamanager, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2026-04-02.
- How severe is CVE-2026-29782?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2026-29782 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.