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TI-2021-18337 Aliases CVE-2021-41615GHSA-m7x8-4574-hxw6

websda.c in GoAhead WebServer 2.1.8 has insufficient nonce entropy because the nonce…

Priority MEDIUM 45CWE-331Published · 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 3.1 · NVD. Fix status from CNA.

Summary

websda.c in GoAhead WebServer 2.1.8 has insufficient nonce entropy because the nonce calculation relies on the hardcoded onceuponatimeinparadise value, which does not follow the secret-data guideline for HTTP Digest Access Authentication in RFC 7616 section 3.3 (or RFC 2617 section 3.2.1). NOTE: 2.1.8 is a version from 2003; however, the affected websda.c code appears in multiple derivative works that may be used in 2021. Recent GoAhead software is unaffected.

Why it matters now

EPSS 0.01398 72nd 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
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:embedthis:goahead:2.1.8:*:*:*:*:*:*:*2.1.8VulnerableEmbedthis
  • cpe:2.3:a:embedthis:goahead:2.1.8:*:*:*:*:*:*:* Versions 2.1.8 Vulnerable ·Embedthis

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-41615
  2. 2026-10-03 Alias added: GHSA-m7x8-4574-hxw6

References

Advisory 2

  • TI-2017-12833 Embedthis GoAhead before 3.6.5 allows remote code execution if CGI is enabled and a CGI… KEVCVSS 3.1HIGH 8.1
  • TI-2019-03557 Use after free in EmbedThis CVSS 3.1CRITICAL 9.8
  • TI-2021-18771 An issue was discovered in GoAhead 4.x and 5.x before 5.1.5. CVSS 3.1CRITICAL 9.8
  • TI-2017-03674 A vulnerability in a custom-built GoAhead web server used on Foscam, Vstarcam, and… CVSS 3.0CRITICAL 9.8
  • TI-2019-03558 Infinite loop in EmbedThis CVSS 3.1HIGH 7.5
  • TI-2014-07892 EmbedThis GoAhead 3.0.0 through 3.4.1 does not properly handle path segments starting… CVSS 2.0HIGH 7.5
See all 16 →

Sources

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