CVE-2026-86197Disclosure

LOWCVSS 5.1 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Grav before 2.0.20 contains a cross-site scripting vulnerability in the Twig sandbox policy that allowlists addJs and addCss methods on Grav\Common\Assets without proper output escaping. Page editors can inject arbitrary script by registering malicious assets or injecting attributes, which are rendered unescaped into document head tags and executed for all visitors including administrators.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

2 mentions across 1 observed day

What's happening

Technical details provided in 2 signals
Disclosure: 2 classified signals
2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d

Signal classification1 categories

Disclosure

2100.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

SystemTek - Technology news website@SystemTek_UK46d
Disclosure
Grav CMS Vulnerability CVE-2026-86197 Could Allow Page Editors to Inject Malicious Scripts https://www.systemtek.co.uk/2026/09/grav-cms-vulnerability-cve-2026-86197-could-allow-page-editors-to-inject-malicious-scripts/ via @SystemTek_UK
Post summary
The post announces the discovery of CVE-2026-86197 in Grav CMS, noting that page editors could inject malicious scripts, but provides no PoC, exploit code, or evidence of active exploitation.
0000071
1.8K followersView on X
CVE@CVEnew46d
Disclosure
CVE-2026-86197 Grav before 2.0.20 contains a cross-site scripting vulnerability in the Twig sandbox policy that allowlists addJs and addCss methods on Grav\Common\Assets without pro… https://www.cve.org/CVERecord?id=CVE-2026-86197
Post summary
A cross‑site scripting vulnerability (CVE‑2026‑86197) exists in Grav versions prior to 2.0.20, affecting the Twig sandbox policy by allowing unwarranted allowlisting of addJs and addCss methods.
000001.1K
58.1K followersView on X

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