CVE-2023-28104: `silverstripe/graphql` serves Silverstripe data as GraphQL representations

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HIGH 7.5REMOTEDOWNGRADE

CVE-2023-28104 is a high-severity flaw (CVSS 7.5) affecting graphql. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

`silverstripe/graphql` serves Silverstripe data as GraphQL representations. In versions 4.2.2 and 4.1.1, an attacker could use a specially crafted graphql query to execute a denial of service attack against a website which has a publicly exposed graphql endpoint. This mostly affects websites with particularly large/complex graphql schemas. Users should upgrade to `silverstripe/graphql` 4.2.3 or 4.1.2 to remedy the vulnerability.

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 36%)
CISA exploited list	No
Weakness	CWE-770
Published	2023-03-16
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: silverstripe

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-03-16 16:15 UTCPublished CVE record published
2026-06-17 05:46 UTCUpdated Record last modified

silverstripe graphql DOWNGRADE

Affected: 4.1.1 · 4.2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1.1

1. Check installed version

apt-cache policy graphql || rpm -q graphql || graphql --version

2. No fixed release: DOWNGRADE to a release before 4.1.1 (Debian / Ubuntu)

apt-cache madison graphql sudo apt install graphql=<VERSION_BEFORE_4.1.1> sudo apt-mark hold graphql

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list graphql sudo dnf downgrade graphql-<VERSION_BEFORE_4.1.1> sudo dnf versionlock add graphql

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-28104?

graphql: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-28104 being exploited?

CVE-2023-28104 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-28104 affect?

CVE-2023-28104 affects graphql. Severity is high (CVSS 7.5). `silverstripe/graphql` serves Silverstripe data as GraphQL representations. In versions 4.2.2 and 4.1.1, an attacker could use a specially crafted graphql query to execute a denial of service attack against a website which has a publicly ex

How urgent is CVE-2023-28104?

Priority 47/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-44401 MEDIUM 5.3 UPGRADE The Silverstripe CMS GraphQL Server serves Silverstripe data as GraphQL representations
CVE-2023-40180 HIGH 7.5 UPGRADE silverstripe-graphql is a package which serves Silverstripe data in GraphQL representations
CVE-2023-26144 MEDIUM 5.3 UPGRADE Versions of the package graphql from 16.3.0 and before 16.8.1 are vulnerable to Denial of Service (DoS) due to

References

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