# CVE-2026-121414: Parse Server before 8.6.110 and 9.0.0 before 9.10.6-alpha.2 Denial of Service via afterSave Pointer Update

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

Parse Server before 8.6.110 and 9.0.0 before 9.10.6-alpha.2 fails to contain a serialization error when an object update uses a dot notation key targeting a pointer field's object identifier on a class with an afterSave trigger. Attackers, including unauthenticated clients when objects are writable without a session, can send such an update to crash the Node process.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/parse-community/parse-server/pull/10802
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/parse-community/parse-server/pull/10803

## Affected products and versions

- parse-community / parse-server (parse-server): ≥ 9.0.0; < 9.10.6-alpha.2 (affected, semver); 9.10.6-alpha.2 (unaffected, semver). Source: CNA: VulnCheck
- parse-community / parse-server (parse-server): ≥ 0; < 8.6.110 (affected, semver); 8.6.110 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.2 (high); CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 5.9 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-248

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/parse-community/parse-server/security/advisories/GHSA-wc3c-6843-q7mv (CNA: VulnCheck; vendor-advisory)

- https://github.com/parse-community/parse-server/pull/10802 (CNA: VulnCheck; patch, issue-tracking)

- https://github.com/parse-community/parse-server/pull/10803 (CNA: VulnCheck; patch, issue-tracking)

- https://www.vulncheck.com/advisories/parse-server-before-8.6.110-and-9.0.0-before-9.10.6-alpha.2-denial-of-service-via-aftersave-pointer-update (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-121414; retrieved 2026-11-03; source updated 2026-11-03

Revision: f4700e0b403112df86bf1a76cfa565f89d83ce3570ef377305af1ad6041b0f37

Canonical: https://y2.dev/cve/CVE-2026-121414

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