Sprig Plugin for Craft CMS potentially discloses sensitive information via Sprig Playground

CVE-2026-27131 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Admin users, and users with explicit permission to access the Sprig Playground, could potentially expose the security key, credentials, and other sensitive configuration data, in addition to running the hashData() signing function.

This issue was mitigated in versions 3.7.2 and 2.15.2 by disabling access to the Sprig Playground entirely when devMode is disabled, by default. It is possible to override this behaviour using a new enablePlaygroundWhenDevModeDisabled that defaults to false.

References:

  • https://github.com/putyourlightson/craft-sprig/commit/db18c46f6dc5603828aa321a3a615adbd677d475
  • https://github.com/putyourlightson/craft-sprig/commit/09c9da2ffb45a8857829f3390ae2578e26cfe03b

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2026-03-23 20:25:37 UTC
Updated
2026-03-30 13:55:56 UTC
GitHub reviewed
2026-03-23 20:25:37 UTC
NVD published
2026-03-23

EPSS Score

Score Percentile
0.04% 10.87%

CVSS Scores

Base score Version Severity Vector
5.5 3.1 —
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.

Identifiers

Type Value
GHSA GHSA-m59h-42jf-cphr ↗
CVE CVE-2026-27131 ↗

CWEs

CWE id Name
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-489 Active Debug Code

Credits

  • Neosprings (reporter)
  • bencroker (analyst)

Affected packages (2)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
composer putyourlightson/craft-sprig >= 2.0.0, < 2.15.2 2.15.2 —
composer putyourlightson/craft-sprig >= 3.0.0, < 3.7.2 3.7.2 —

References

cvelogic Threat Intelligence