How severe is CVE-2026-34574?

CVE-2026-34574 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-34574 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34574?

CVE-2026-34574 primarily affects Parseplatform Parse-server. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-34574?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-34574 have an EU (EUVD) identifier?

Yes. CVE-2026-34574 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17502.

When was CVE-2026-34574 published?

CVE-2026-34574 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-34574

CVE-2026-34574 is a medium-severity vulnerability in Parseplatform Parse-server with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-697.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 5.3
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17502
Weakness: CWE-697
Affected product: Parseplatform Parse-server
Published: 2026-03-31
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-34574?: 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.
How severe is CVE-2026-34574?: CVE-2026-34574 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-34574 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34574?: CVE-2026-34574 primarily affects Parseplatform Parse-server. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-34574?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34574 have an EU (EUVD) identifier?: Yes. CVE-2026-34574 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17502.
When was CVE-2026-34574 published?: CVE-2026-34574 was published on 2026-03-31 and last updated on 2026-06-17.

References

Affected products (14)

cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha1:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha10:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha11:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha12:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha13:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha2:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha3:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha4:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha5:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha6:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha7:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha8:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha9:*:*:*:node.js:*:*

More vulnerabilities in Parseplatform Parse-server

CVE-2026-30966 — Critical (CVSS 10.0): Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to…
CVE-2024-27298 — Critical (CVSS 10.0): parse-server is a Parse Server for Node.js / Express. This vulnerability allows SQL injection when Parse Server is…
CVE-2022-24760 — Critical (CVSS 10.0): Parse Server is an open source http web server backend. In versions prior to 4.10.7 there is a Remote Code Execution…
CVE-2026-32248 — Critical (CVSS 9.8): Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to…
CVE-2026-31871 — Critical (CVSS 9.8): Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to…
CVE-2026-31856 — Critical (CVSS 9.8): Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. A SQL injection…

All CVEs affecting Parseplatform Parse-server →

Other CWE-697 vulnerabilities

CVE-2025-54336 — Critical (CVSS 9.8): In Plesk Obsidian 18.0.70, _isAdminPasswordValid uses an == comparison. Thus, if the correct password is "0e" followed…
CVE-2024-24621 — Critical (CVSS 9.8): Softaculous Webuzo contains an authentication bypass vulnerability through the password reset functionality. Remote,…
CVE-2024-5217 — Critical (CVSS 9.8): ServiceNow has addressed an input validation vulnerability that was identified in the Washington DC, Vancouver, and…
CVE-2023-32571 — Critical (CVSS 9.8): Dynamic Linq 1.0.7.10 through 1.2.25 before 1.3.0 allows attackers to execute arbitrary code and commands when…
CVE-2022-47034 — Critical (CVSS 9.8): A type juggling vulnerability in the component /auth/fn.php of PlaySMS v1.4.5 and earlier allows attackers to bypass…
CVE-2021-44971 — Critical (CVSS 9.8): Multiple Tenda devices are affected by authentication bypass, such as AC15V1.0 Firmware V15.03.05.20_multi?AC5V1.0…

Browse all CWE-697 vulnerabilities →