# CVE-2026-87722 — Gerrit

> As of 2026-09-25, CVE-2026-87722 is a High-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in Gerrit, CVSS v4.0 8.7, EPSS 0.3% (22.7th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-87722 as of 2026-09-25; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-25

## What is CVE-2026-87722?

Uncontrolled Resource Consumption (CWE-400 / CWE-1333) in regex search query predicates (such as RegexProjectPredicate, RegexRefPredicate, RegexPathPredicate, and sibling predicates) and REST regex filter endpoints (RegexListSearcher /projects/?r= and RefFilter /projects/{project}/branches/?r=) in Gerrit Code Review versions 2.1.6 through 3.12.9, 3.13.0 through 3.13.8, and 3.14.0 through 3.14.2 allows an unauthenticated remote attacker (or an authenticated user if anonymous read access is disabled) to cause a denial of service (CPU starvation and JVM heap exhaustion / OutOfMemoryError) via crafted search queries or REST API requests containing regular expressions with large counted repetitions or exponential DFA determinization patterns. Because the user-supplied regular expression is compiled into an unbounded dk.brics.automaton instance (new RegExp(re).toAutomaton()) on the request thread prior to index evaluation or access control visibility filtering, trivial queries can exhaust JVM heap or pin request threads regardless of heap size. This issue is fixed in Gerrit Code Review versions 3.12.10, 3.13.9, and 3.14.3.

The record classifies CVE-2026-87722 under weakness classes [CWE-400](https://intel.threadlinqs.com/cwe/CWE-400), [CWE-1333](https://cwe.mitre.org/data/definitions/1333.html). 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 11 days ago.

## Severity and exploitation probability

- **CVSS v4.0 base score:** 8.7 — High (derived from score) (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.3% probability of exploitation in the next 30 days, higher than 22.7% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 7.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-24, last modified 2026-09-25

## Is CVE-2026-87722 being exploited?

Weaponised exploit code for CVE-2026-87722 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 42 in the Threadlinqs vulnerability feed.

- [trickest/cve](https://github.com/trickest/cve/blob/main/2026/CVE-2026-87722.md) (trickest)

## Affected products and versions

- **Gerrit**: Gerrit

## How to fix CVE-2026-87722

No vendor patch reference has been recorded for CVE-2026-87722 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-87722

No threat campaign in the Threadlinqs corpus currently references CVE-2026-87722, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, FIRST EPSS, public proof-of-concept repositories, NVD. Last verified by Threadlinqs on 2026-09-30. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [issues.gerritcodereview.com](https://issues.gerritcodereview.com/issues/540877705)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-87722
Full detection coverage and IOCs for threats exploiting CVE-2026-87722 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp