# CVE-2026-65314: Electric Postgres Sync Excluded-Column Value Inference via Subset Where Clauses

> Attackers can infer values of excluded columns in Electric Postgres Sync by crafting subset where clauses, bypassing column-based access restrictions to read sensitive data.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/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:** 21 Jul 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-c82q-v86f-c87f, GHSA-qm4p-6mgx-rmgj

## What is CVE-2026-65314?

CVE-2026-65314 is a medium-severity vulnerability in ElectricSQL Electric Postgres Sync, published on 21 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Electric Postgres Sync versions below 1.6.10 contains an information disclosure vulnerability that allows attackers to infer the values of excluded columns by crafting subset where clause conditions against shape responses. Attackers can observe whether subset where conditions match rows to deduce sensitive field data even though those columns are not returned in shape responses, bypassing column-based access restrictions.

Weakness: CWE-203 (Observable Discrepancy)

## Which versions are affected by CVE-2026-65314?


## How do I fix CVE-2026-65314?

No fix has been published for CVE-2026-65314 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-65314 being exploited?

There is no known exploitation of CVE-2026-65314 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-65314 and fix it if it is affected.

What it is: CVE-2026-65314 is a medium-severity vulnerability in ElectricSQL Electric Postgres Sync, published on 21 Jul 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-2026-65314 in the wild and no public exploit code.

Affected product: ElectricSQL Electric Postgres Sync. 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-2026-65314/ (Markdown: https://insights.sbomify.com/CVE-2026-65314/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-65314
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-65314
- OSV: https://osv.dev/vulnerability/CVE-2026-65314

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-65314/
Summaries are generated and may contain mistakes; the official description above is the record.