CVE-2023-5256

Drupal core - Critical - Cache poisoning - SA-CORE-2023-006

HIGH
7.5
CVSS Score
Published: September 28, 2023 at 06:17 PM UTC
Updated: June 17, 2026 at 06:48 AM UTC
1 product affected across 1 vendorDrupal

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Severity
HIGH7.5
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

In certain scenarios, Drupal's JSON:API module will output error backtraces. With some configurations, this may cause sensitive information to be cached and made available to anonymous users, leading to privilege escalation. This vulnerability only affects sites with the JSON:API module enabled, and can be mitigated by uninstalling JSON:API. The core REST and contributed GraphQL modules are not affected.

Affected

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

10.0 ≤ v ≤ 10.0.1110.0 ≤ v < 10.0.1110.0.0 ≤ v < 10.0.1110.1 ≤ v ≤ 10.1.410.1 ≤ v < 10.1.410.1.0 ≤ v < 10.1.48.7.0 ≤ v < 9.5.119.5 ≤ v ≤ 9.5.119.5 ≤ v < 9.5.1110.010.19.5
Affected range stops below 10.0.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.1.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.5.11, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-200NVD-CWE-noinfo

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