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TI-2023-21397 Aliases CVE-2023-40599GHSA-h2gh-pw44-5qf5

Regular expression denial of service in SYNCK GRAPHICA Mailform Pro CGI

Priority MEDIUM 41CWE-1333Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-1333.

Summary

Regular expression Denial-of-Service (ReDoS) exists in multiple add-ons for Mailform Pro CGI 4.3.1.3 and earlier, which allows a remote unauthenticated attacker to cause a denial-of-service condition. Affected add-ons are as follows: call/call.js, prefcodeadv/search.cgi, estimate/estimate.js, search/search.js, suggest/suggest.js, and coupon/coupon.js.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00892 59th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
SYNCK GRAPHICAMailform Pro CGIup to 4.3.1.3—No fix listedCNA
  • Mailform Pro CGI VendorSYNCK GRAPHICA Affected up to 4.3.1.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:synck_graphica:mailform_pro_cgi:*:*:*:*:*:*:*:*up to 4.3.1.3VulnerableSYNCK GRAPHICA
  • cpe:2.3:a:synck_graphica:mailform_pro_cgi:*:*:*:*:*:*:*:* Versions up to 4.3.1.3 Vulnerable ·SYNCK GRAPHICA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-40599
  2. 2026-10-03 Alias added: GHSA-h2gh-pw44-5qf5

References

  • TI-2015-00822 SYNCK GRAPHICA Mailform Pro CGI 4.1.4 and 4.1.5, when the mailauth module is enabled… CVSS 2.0MEDIUM 6.8

Sources