# CVE-2026-15535: AkariAsai self-rag retrieval_lm index.py Indexer.deserialize_from deserialization

> Remote attackers can execute arbitrary code via unsafe deserialization in the Indexer.deserialize_from function of the self-rag library.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Jul 2026
- **Updated:** 13 Jul 2026
- **Also known as:** GHSA-xp65-m377-m42w

## What is CVE-2026-15535?

CVE-2026-15535 is a medium-severity unsafe deserialization vulnerability in AkariAsai self-rag, published on 13 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was determined in AkariAsai self-rag up to 1fcdc420e48f50a7d7ab1ece5494221b93252e99. Affected by this issue is the function Indexer.deserialize_from of the file retrieval_lm/src/index.py of the component retrieval_lm. Executing a manipulation of the argument index_meta.faiss can lead to deserialization. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. This product operates on a rolling release basis, ensuring continuous delivery. Consequently, there are no version details for either affected or updated releases. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-502 (Deserialization of Untrusted Data), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2026-15535?


## How do I fix CVE-2026-15535?

No fix has been published for CVE-2026-15535 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15535 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15535 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15535 and fix it if it is affected.

What it is: CVE-2026-15535 is a medium-severity unsafe deserialization vulnerability in AkariAsai self-rag, published on 13 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15535 exists.

Affected product: AkariAsai self-rag. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-15535/ (Markdown: https://insights.sbomify.com/CVE-2026-15535/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15535
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15535
- OSV: https://osv.dev/vulnerability/CVE-2026-15535

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-15535/
Summaries are generated and may contain mistakes; the official description above is the record.