CVE-2026-4117General

LOWCVSS 5.3 · MEDIUM

Exploit discussion active in current signal (2 latest mentions)

Immediate actions

  • Prioritize remediation for affected systems immediately
  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

The CalJ plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.5. This is due to a missing capability check in the CalJSettingsPage class constructor, which processes the 'save-obtained-key' operation directly from POST data without verifying that the requesting user has the 'manage_options' capability, and without any nonce verification. The plugin bootstrap file (calj.php) instantiates CalJSettingsPage whenever is_admin() returns true, which is the case for any authenticated user making requests to wp-admin URLs (including admin-ajax.php). This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the plugin's API key setting and clear the Shabbat cache, effectively taking control of the plugin's API integration.

3.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-862

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Threat summary

  • Public PoC and exploit tooling are both present
  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Exploit tool or code specified in 1 signal
  • PoC mentioned or linked in 1 signal
  • Technical details provided in 1 signal
  • General: 1 classified signal
  • Disclosure: 1 classified signal
  • Peaked at 2 mentions on most recent observed day (2026-04-23)
  • 3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-04-22: 1Mentions · 2026-04-23: 2PoC Mentioned / Linked · 2026-04-23: 1Exploit Tool / Code · 2026-04-23: 1Technical Details · 2026-04-23: 104-2204-23
Signal classification3 categories
General
133.3%
Disclosure
133.3%
PoC
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-04-221
General1
2026-04-232
Disclosure1PoC1
Full discourse3 posts
  • Atomic Edge@atomicedgeWAF
    PoC

    https://atomicedge.io/cve-proof/cve-2026-4117-calj-version-1-5-medium-vulnerability-proof-of-concept CVE-2026-4117 #WordPress plugin #vulnerability calj #cybersecurity #wordpressfirewall #wordpresssecurity #hacking #wpsecurity #atomicedge

    Post summary

    A PoC for CVE‑2026‑4117 in the Calj WordPress plugin has been posted, but there is no evidence of active exploitation or available patches.

    0000057
    6 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-4117 The CalJ plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.5. This is due to a missing capability check in the CalJSet… https://www.cve.org/CVERecord?id=CVE-2026-4117

    Post summary

    CVE-2026-4117 exposes a missing authorization flaw in CalJ WordPress plugin versions up to 1.5, caused by an absent capability check, with no evidence of exploitation, patch, or PoC provided.

    00000115
    57.2K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    General

    CVE-2026-4117 Missing Authorization in CalJ Plugin for WordPress Versions Up to 1.5 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-4117

    Post summary

    The text merely lists CVE-2026-4117 and notes missing authorization in CalJ Plugin up to version 1.5, with a reference link, but offers no further details regarding exploitation, patching, or technical specifics.

    0000062
    4.0K followersView on X

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