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CVE-2020-13677

Under some circumstances, the Drupal core JSON:API module does not properly restrict access to certain content, which may result in unintended access bypass. Sites that do not have the JSON:API module enabled are not affected.
An official patch is available. Apply the patch as soon as possible.
7.5
CVSS
4.6
ShadowTrackr
NO
CISA KEV
-
NCSC.nl
CVSS v4.0 Metrics
Exploitability
Attack VectorNetwork
ComplexityLow
RequirementsPresent
PrivilegesNone
User InteractionNone
Threat
Exploit MaturityUnreported
Vulnerable System
ConfidentialityHigh
IntegrityNone
AvailabilityNone
Subsequent System
ConfidentialityNone
IntegrityNone
AvailabilityNone
Supplemental
SafetyNegligible
AutomatableYes
RecoveryAutomatic
Value DensityConcentrated
UrgencyMedium
Patch StatusOfficial Patch

Change Log
DateSourceChangesScore
2026-07-21nvdAV: P→N, AC: H→L, PR: H→N, UI: A→N, VC: N→H0.0 → 4.6
2026-07-21nvdpatch: Unavailable→Official Patch0.0 → 0.0
2026-07-21cve.orginitial, patch: Unavailable0.0

Affected Software
VendorProductVersion
DrupalCore≥ 9.2, < 9.2.6
DrupalCore≥ 9.1, < 9.1.13
DrupalCore≥ 8.9, < 8.9.19
drupaldrupal≥ 8.0.0, < 8.9.19
drupaldrupal≥ 9.1.0, < 9.1.13
drupaldrupal≥ 9.2.0, < 9.2.6
Published: 2022-02-11