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TI-2018-13105 Aliases CVE-2018-18531GHSA-8q89-pwhh-7wfq

text/impl/DefaultTextCreator.java, text/impl/ChineseTextProducer.java, and…

Priority MEDIUM 45CWE-330Published · Updated

Key facts

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

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub.

Summary

text/impl/DefaultTextCreator.java, text/impl/ChineseTextProducer.java, and text/impl/FiveLetterFirstNameTextCreator.java in kaptcha 2.3.2 use the Random (rather than SecureRandom) function for generating CAPTCHA values, which makes it easier for remote attackers to bypass intended access restrictions via a brute-force approach.

Why it matters now

EPSS 0.01468 73rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—com.github.penggle:kaptcha (Maven)up to 2.3.2—No fix listedGHSA-8q89-pwhh-7wfq
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • com.github.penggle:kaptcha (Maven) Vendor— Affected up to 2.3.2 Fixed in — No fix listed GHSA-8q89-pwhh-7wfq

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:kaptcha_project:kaptcha:2.3.2:*:*:*:*:*:*:*2.3.2VulnerableKaptcha Project
  • cpe:2.3:a:kaptcha_project:kaptcha:2.3.2:*:*:*:*:*:*:* Versions 2.3.2 Vulnerable ·Kaptcha Project

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-18531
  2. 2026-10-03 Alias added: GHSA-8q89-pwhh-7wfq

References

Advisory 3

Other 1

Sources

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