# CVE-2026-90775: PostGIS address_standardizer through 3.7.0 Out-of-Bounds Read via Unvalidated Rule Weight

> Attackers can crash the PostgreSQL backend by supplying invalid weight values in address standardization rules, causing a denial of service.

- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **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 Sep 2026
- **Updated:** 18 Sep 2026
- **Also known as:** DEBIAN-CVE-2026-90775, GHSA-pjx8-ww25-pcf8, UBUNTU-CVE-2026-90775

## What is CVE-2026-90775?

CVE-2026-90775 is a high-severity denial of service vulnerability in PostGIS address_standardizer, published on 13 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

PostGIS address_standardizer through 3.7.0 fails to validate the Weight parameter from caller-supplied rules tables before using it as an array index. Attackers can craft malicious rule rows with out-of-range Weight values to trigger out-of-bounds reads in the load_value array, causing the PostgreSQL backend process to crash and terminate all cluster sessions.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2026-90775?


## How do I fix CVE-2026-90775?

No fix has been published for CVE-2026-90775 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-90775 being exploited?

There is no known exploitation of CVE-2026-90775 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-90775 and fix it if it is affected.

What it is: CVE-2026-90775 is a high-severity denial of service vulnerability in PostGIS address_standardizer, published on 13 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-90775 in the wild and no public exploit code.

Affected product: PostGIS address_standardizer. 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-2026-90775/ (Markdown: https://insights.sbomify.com/CVE-2026-90775/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-90775
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-90775
- OSV: https://osv.dev/vulnerability/CVE-2026-90775

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-90775/
Summaries are generated and may contain mistakes; the official description above is the record.