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Vulnerability details: VCID-d93g-rc39-8fc2
Vulnerability ID VCID-d93g-rc39-8fc2
Aliases CVE-2023-5256
GHSA-rjqg-3h9m-fx5x
Summary Cache poisoning in drupal/core 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.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-209 Generation of Error Message Containing Sensitive Information
System Score Found at
epss 0.01615 https://api.first.org/data/v1/epss?cve=CVE-2023-5256
generic_textual CRITICAL https://github.com/drupal/core
generic_textual CRITICAL https://github.com/drupal/core/commit/1cd2741c2b43f6ad1bdfc121b8d9ec3b87e70742
generic_textual CRITICAL https://github.com/drupal/core/commit/5495dc530e3acd056478245bfe1828210c6da7dc
generic_textual CRITICAL https://github.com/drupal/core/commit/d4fe67562ee3ea0d9ecb9672d2945d94c5633d24
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2023-5256
generic_textual CRITICAL https://nvd.nist.gov/vuln/detail/CVE-2023-5256
cvssv3.1 7.5 https://www.drupal.org/sa-core-2023-006
generic_textual CRITICAL https://www.drupal.org/sa-core-2023-006
ssvc Track https://www.drupal.org/sa-core-2023-006
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2023-5256
https://github.com/drupal/core
https://github.com/drupal/core/commit/1cd2741c2b43f6ad1bdfc121b8d9ec3b87e70742
https://github.com/drupal/core/commit/5495dc530e3acd056478245bfe1828210c6da7dc
https://github.com/drupal/core/commit/d4fe67562ee3ea0d9ecb9672d2945d94c5633d24
https://nvd.nist.gov/vuln/detail/CVE-2023-5256
https://www.drupal.org/sa-core-2023-006
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
GHSA-rjqg-3h9m-fx5x https://github.com/advisories/GHSA-rjqg-3h9m-fx5x
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2023-5256
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://www.drupal.org/sa-core-2023-006
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2024-09-23T18:22:43Z/ Found at https://www.drupal.org/sa-core-2023-006
Exploit Prediction Scoring System (EPSS)
Percentile 0.80933
EPSS Score 0.01615
Published At June 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-01T12:14:02.076680+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/09/GHSA-rjqg-3h9m-fx5x/GHSA-rjqg-3h9m-fx5x.json 36.1.3