CVE-2020-15688
GoAhead before 5.1.2 mishandles the nonce value during Digest authentication. This may permit...
The HTTP Digest Authentication in the GoAhead web server before 5.1.2 does not completely protect against replay attacks. This allows an unauthenticated remote attacker to bypass authentication via capture-replay if TLS is not used to protect the underlying communication channel.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
The HTTP Digest Authentication in the GoAhead web server before 5.1.2 does not completely protect against replay attacks. This allows an unauthenticated remote attacker to bypass authentication via capture-replay if TLS is not used to protect the underlying communication channel.
- Record
CVE-2020-15688- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-294
- Updated
- 2026-11-02
CVE List No score
The HTTP Digest Authentication in the GoAhead web server before 5.1.2 does not completely protect against replay attacks. This allows an unauthenticated remote attacker to bypass authentication via capture-replay if TLS is not used to protect the underlying communication channel.
- Record
CVE-2020-15688- Updated
- 2026-11-02
EUVDEUVD-2020-7675 No score
The HTTP Digest Authentication in the GoAhead web server before 5.1.2 does not completely protect against replay attacks. This allows an unauthenticated remote attacker to bypass authentication via capture-replay if TLS is not used to protect the underlying communication channel.
- Record
EUVD-2020-7675- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6r2c-458p-644h
GoAhead before 5.1.2 mishandles the nonce value during Digest authentication. This may permit...
GoAhead before 5.1.2 mishandles the nonce value during Digest authentication. This may permit request replay attacks for local requests over HTTP.
- Record
GHSA-6r2c-458p-644h- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-294
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-15688 is a high vulnerability (CVSS 8.8) in Embedthis Goahead, published July 23, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.04%, the 90th percentile. No source names a fixed version.