CVE-2026-34574

Q: How do I fix CVE-2026-34574?

Upgrade parse-server to 8.6.69 or later.

Q: Is CVE-2026-34574 being actively exploited?

Not that we know of. CVE-2026-34574 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.21% is the estimated probability that it will be exploited in the next 30 days. That is higher than 11% of all scored CVEs.

Q: How severe is CVE-2026-34574?

CVE-2026-34574 has a CVSS v3 base score of 5.4, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-34574 affect?

Published advisories record a fix for parse-server (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUM

5.4

CVSS v3

NVD

Description

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.

CWE-697

How to fix

Remediation Available

parse-serverNVD

Affected:< 8.6.69Fixed in:8.6.69CVE-2026-34574derived from NVD

Affected:>= 9.0.0, < 9.7.0Fixed in:9.7.0CVE-2026-34574derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.21%probability of exploitation in 30 days

11thpercentile

Low risk: more likely to be exploited than 11% of all known CVEs.

References

Patch5

Related Vulnerabilities

Other CWE-697 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-5217	Critical	9.8	100%	KEV	-
CVE-2020-5849	High	7.5	93%	KEV	-
CVE-2020-8864	High	8.8	80%	-	-
CVE-2025-3102	High	8.1	76%	-	-
CVE-2023-32571	Critical	9.8	35%	-	-
CVE-2020-8862	High	8.8	13%	-	-

Common questions

How do I fix CVE-2026-34574?

Upgrade parse-server to 8.6.69 or later.

Is CVE-2026-34574 being actively exploited?

Not that we know of. CVE-2026-34574 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.21% is the estimated probability that it will be exploited in the next 30 days. That is higher than 11% of all scored CVEs.

How severe is CVE-2026-34574?

CVE-2026-34574 has a CVSS v3 base score of 5.4, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-34574 affect?

Published advisories record a fix for parse-server (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-34574

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-24.