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CVE-2023-40180

Denial of service vulnerability in silverstripe-graphql via recursive queries

HIGH
7.5
CVSS Score
Published: October 16, 2023 at 06:05 PM UTC
Updated: June 17, 2026 at 06:16 AM UTC
1 product affected across 1 vendorGraphql

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

silverstripe-graphql is a package which serves Silverstripe data in GraphQL representations. An attacker could use a recursive graphql query to execute a Distributed Denial of Service attack (DDOS attack) against a website. This mostly affects websites with publicly exposed graphql schemas. If your Silverstripe CMS project does not expose a public facing graphql schema, a user account is required to trigger the DDOS attack. If your site is hosted behind a content delivery network (CDN), such as Imperva or CloudFlare, this may further mitigate the risk. This issue has been addressed in versions 3.8.2, 4.1.3, 4.2.5, 4.3.4, and 5.0.3. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Graphql· Silverstripe
95%
v < 3.8.2v < 4.1.3v < 4.2.5v < 4.3.4v < 5.0.33.0.0 ≤ v < 3.8.24.0.0 ≤ v < 4.1.34.2.0 ≤ v < 4.2.54.3.0 ≤ v < 4.3.45.0.0 ≤ v < 5.0.3
Affected range stops below 3.8.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.1.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.2.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.3.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.0.3, so it looks safe — our inference, not a vendor statement

References (5)

x_refsource_MISCMitigation
Source: [email protected]
https://docs.silverstripe.org/en/developer_guides/graphql/security_and_best_practices/recursive_or_complex_queries
x_refsource_MISCPatch
Source: [email protected]
https://github.com/silverstripe/silverstripe-graphql/commit/f6d5976ec4608e51184b0db1ee5b9e9a99d2501c
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/silverstripe/silverstripe-graphql/security/advisories/GHSA-v23w-pppm-jh66
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/silverstripe/silverstripe-graphql/tree/3.8#recursive-or-complex-queries
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.silverstripe.org/download/security-releases/CVE-2023-40180

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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