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TI-2026-76985 Aliases CVE-2026-113667GHSA-44qr-rrjg-2cqq

ApostropheCMS CAPTCHA response token not URL-encoded

Priority LOW 24CWE-116Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

The ApostropheCMS Form add-on before 1.5.5, login-recaptcha before 1.2.1, and login-hcaptcha before 1.3.0 insert the CAPTCHA response token into provider verification requests without URL encoding (CWE-116). A remote attacker with low privileges can craft tokens that smuggle request parameters and disrupt CAPTCHA verification and the form or login flows it gates. Bypass probing is possible, but a successful bypass or secret disclosure is not established.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

ApostropheCMS is an open-source Node.js content management system. Prior to 1.5.5 of the Form add-on, 1.2.1 of login-recaptcha, and 1.3.0 of login-hcaptcha, these three CAPTCHA integrations interpolate an unencoded user-supplied response token into the provider verification request. Crafted tokens can smuggle request parameters and disrupt CAPTCHA verification and CAPTCHA-gated form or login flows; automated bypass probing is possible, but a successful CAPTCHA bypass or secret disclosure is not established. This issue is fixed in Form 1.5.5, login-recaptcha 1.2.1, and login-hcaptcha 1.3.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00366 30th percentileScored 2026-11-07
Fix Fixed apostrophe (apostrophecms): 4.33.0form (@apostrophecms): 1.5.5+5 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
apostrophecmsapostrophebefore 4.33.04.33.0Patch availableCNA
apostrophecmsformbefore 1.5.51.5.5Patch availableCNA
apostrophecmslogin-hcaptchabefore 1.3.01.3.0Patch availableCNA
apostrophecmslogin-recaptchabefore 1.2.11.2.1Patch availableCNA
—@apostrophecms/form (npm)before 1.5.51.5.5Patch availableGHSA-44qr-rrjg-2cqq
—@apostrophecms/login-recaptcha (npm)before 1.2.11.2.1Patch availableGHSA-44qr-rrjg-2cqq
—@apostrophecms/login-hcaptcha (npm)before 1.3.01.3.0Patch availableGHSA-44qr-rrjg-2cqq
  • apostrophe Vendorapostrophecms Affected before 4.33.0 Fixed in 4.33.0 Patch available CNA
  • form Vendorapostrophecms Affected before 1.5.5 Fixed in 1.5.5 Patch available CNA
  • login-hcaptcha Vendorapostrophecms Affected before 1.3.0 Fixed in 1.3.0 Patch available CNA
  • login-recaptcha Vendorapostrophecms Affected before 1.2.1 Fixed in 1.2.1 Patch available CNA
  • @apostrophecms/form (npm) Vendor— Affected before 1.5.5 Fixed in 1.5.5 Patch available GHSA-44qr-rrjg-2cqq
  • @apostrophecms/login-recaptcha (npm) Vendor— Affected before 1.2.1 Fixed in 1.2.1 Patch available GHSA-44qr-rrjg-2cqq
  • @apostrophecms/login-hcaptcha (npm) Vendor— Affected before 1.3.0 Fixed in 1.3.0 Patch available GHSA-44qr-rrjg-2cqq

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:apostrophecms:apostrophecms:*:*:*:*:*:*:*:*——apostrophecms
  • cpe:2.3:a:apostrophecms:apostrophecms:*:*:*:*:*:*:*:* Versions — — ·apostrophecms

Remediation

Upgrade @apostrophecms/form to 1.5.5, @apostrophecms/login-recaptcha to 1.2.1, and @apostrophecms/login-hcaptcha to 1.3.0. The sources list no fixed version for apostrophe.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA apostrophe (apostrophecms) Fixed in 4.33.0
  • Fix · CNA form (@apostrophecms) Fixed in 1.5.5
  • Fix · CNA login-hcaptcha (@apostrophecms) Fixed in 1.3.0
  • Fix · CNA login-recaptcha (@apostrophecms) Fixed in 1.2.1
  • Fix · GHSA-44qr-rrjg-2cqq @apostrophecms/form (npm) Fixed in 1.5.5 Advisory →
  • Fix · GHSA-44qr-rrjg-2cqq @apostrophecms/login-recaptcha (npm) Fixed in 1.2.1 Advisory →
  • Fix · GHSA-44qr-rrjg-2cqq @apostrophecms/login-hcaptcha (npm) Fixed in 1.3.0 Advisory →

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-113667
  2. 2026-10-21 Alias added: GHSA-44qr-rrjg-2cqq
  3. 2026-10-21 Fix available: npm/@apostrophecms/[email protected], npm/@apostrophecms/[email protected], npm/@apostrophecms/[email protected] · GHSA-44qr-rrjg-2cqq
  4. 2026-10-21 CVSS score added · GHSA-44qr-rrjg-2cqq
  5. 2026-10-21 Weakness changed · GHSA-44qr-rrjg-2cqq
  6. 2026-10-21 5 new references · GHSA-44qr-rrjg-2cqq
  7. 2026-10-21 CISA SSVC decision points changed

References

Other 5

  • TI-2026-25223 ApostropheCMS has Arbitrary File Write (Zip Slip / Path Traversal) in Import-Export Gzip Extraction CVSS 3.1CRITICAL 10.0
  • TI-2026-32848 Apostrophe has default XSS via `xmp` raw-text passthrough in `sanitize-html` CVSS 3.1CRITICAL 9.3
  • TI-2026-38664 @apostrophecms/seo Vulnerable to Stored XSS via Unsanitized Google Analytics / GTM ID Injected into Script Tag CVSS 3.1HIGH 8.7
  • TI-2026-27673 ApostropheCMS: Stored XSS in SEO Fields Leads to Authenticated API Data Exposure in ApostropheCMS CVSS 3.1HIGH 8.7
  • TI-2026-76992 Unauthenticated resource exhaustion via ApostropheCMS import routes CVSS 3.1HIGH 7.5
  • TI-2026-76974 ApostropheCMS leaves rejected CSV uploads in temporary directory CVSS 3.1HIGH 7.5
See all 65 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences