CVE-2026-34574

MEDIUMNVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 89% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.69 and 9.7.0-alpha.14, an authenticated user can bypass the immutability guard on session fields (expiresAt, createdWith) by sending a null value in a PUT request to the session update endpoint. This allows nullifying the session expiry, making the session valid indefinitely and bypassing configured session length policies. This issue has been patched in versions 8.6.69 and 9.7.0-alpha.14.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity54% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

March 31, 2026

Last Modified

July 24, 2026

Advisory Details (5)

Auto-updated Jul 26, 2026
Patch available. Sources: github_commit, github_pr, github.
github Patch Available

Session field immutability bypass via falsy-value guard · Advisory · parse-community/parse-server · GitHub

https://github.com/parse-community/parse-server/security/advisories/GHSA-f6j3-w9v3-cq22
github_pr Patch Available

fix: Session field immutability bypass via falsy-value guard (GHSA-f6j3-w9v3-cq22)

Patch available: parse-community/parse-server 8.6.81 (PR #10348 merged 2026-03-29)

https://github.com/parse-community/parse-server/pull/10348
github_pr Patch Available

fix: Session field immutability bypass via falsy-value guard (GHSA-f6j3-w9v3-cq22)

Patch available: parse-community/parse-server 9.9.1-alpha.5 (PR #10347 merged 2026-03-29)

https://github.com/parse-community/parse-server/pull/10347
github_commit Patch Available

commit ebccd7fe2708 (parse-community/parse-server)

Patch available: parse-community/parse-server 8.6.81 (contains commit ebccd7fe2708)

https://github.com/parse-community/parse-server/commit/ebccd7fe2708007e62f705ee1c820a6766178777
github_commit Patch Available

commit 90802969fc71 (parse-community/parse-server)

Patch available: parse-community/parse-server 9.9.1-alpha.5 (contains commit 90802969fc71)

https://github.com/parse-community/parse-server/commit/90802969fc713b7bc9733d7255c7519a6ed75d21

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
parse-server—8.6.69—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 44× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 108 total refreshes for this CVE.

  1. 2026-07-26 14:54 UTCEPSS rescore
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  3. 2026-07-26 09:35 UTCEG score recompute
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Frequently asked(5)

What is CVE-2026-34574?
CVE-2026-34574 is a medium vulnerability published on March 31, 2026. Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.69 and 9.7.0-alpha.14, an authenticated user can bypass the immutability guard on session fields (expiresAt, createdWith) by sending a null value in a PUT request to the…
When was CVE-2026-34574 disclosed?
CVE-2026-34574 was first published in the National Vulnerability Database on March 31, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34574 actively exploited?
CVE-2026-34574 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 88.7% of all scored CVEs.
What is the CVSS score of CVE-2026-34574?
CVE-2026-34574 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-34574?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34574, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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