CVE-2026-119699: DoS (CVSS 5.3)

Description

WPGraphQL Smart Cache before 2.3.3 contains an uncontrolled resource consumption vulnerability that allows unauthenticated attackers to persist unlimited query documents via the Automatic Persisted Query handler. Attackers can send distinct queries with matching SHA-256 queryId values, including batched operations, to grow the wp_posts table without bound and degrade database performance.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploit Prediction

0.0045

Probability of exploitation

0.39%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-770 CWE-770

References

Other References

https://github.com/wp-graphql/wp-graphql https://github.com/wp-graphql/wp-graphql/blob/wp-graphql-smart-cache/v2.3.2/plugins/wp-graphql-smart-cache/src/Document.php https://github.com/wp-graphql/wp-graphql/commit/80c021c42f4d4969e1b41760a08b4faf3c544a9e https://github.com/wp-graphql/wp-graphql/releases/tag/wp-graphql-smart-cache%2Fv2.3.3 https://github.com/wp-graphql/wp-graphql/security/advisories/GHSA-5p5r-f66g-r4vp https://www.vulncheck.com/advisories/wpgraphql-smart-cache-before-2.3.3-unbounded-persisted-query-storage-dos

Frequently Asked Questions

What is CVE-2026-119699? +

WPGraphQL Smart Cache before 2.3.3 contains an uncontrolled resource consumption vulnerability that allows unauthenticated attackers to persist unlimited query documents via the Automatic Persisted Query handler. Attackers can send distinct queries with matching SHA-256 queryId values, including batched operations, to grow the wp_posts table without bound and degrade database performance. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-119699? +

CVE-2026-119699 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0045, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-119699? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-119699