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2 vulnerabilities found for keeper.sh by ridafkih
CVE-2026-75583 (GCVE-0-2026-75583)
Vulnerability from nvd – Published: 2026-08-19 16:35 – Updated: 2026-08-21 11:21
VLAI
EPSS
VEX
Title
keeper.sh Calendar version prior to 2.18.14 SSRF Guard Bypass via DNS Rebinding
Summary
keeper.sh's calendar module version prior to 2.18.14 contains a server-side request forgery (SSRF) guard bypass vulnerability that allows authenticated attackers to reach private network addresses by exploiting a DNS rebinding attack against the two-phase URL validation and connection flow. The SSRF guard validates a hostname's resolved IP addresses but discards them before the actual HTTP connection is opened, allowing an attacker who controls authoritative DNS to return a public address during validation and a private address during the subsequent independent socket-level DNS resolution, causing the guard to pass while the outbound connection reaches internal infrastructure such as cloud instance metadata endpoints.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 17:13 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ridafkih/keeper.sh | product |
| https://github.com/ridafkih/keeper.sh/security/ad… | vendor-advisory |
| https://github.com/ridafkih/keeper.sh/commit/aea1… | patch |
| https://www.vulncheck.com/advisories/keeper-sh-ca… | third-party-advisory |
Impacted products
Date Public
2026-08-19 00:00
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CVE-2026-75583 (GCVE-0-2026-75583)
Vulnerability from cvelistv5 – Published: 2026-08-19 16:35 – Updated: 2026-08-21 11:21
VLAI
EPSS
VEX
Title
keeper.sh Calendar version prior to 2.18.14 SSRF Guard Bypass via DNS Rebinding
Summary
keeper.sh's calendar module version prior to 2.18.14 contains a server-side request forgery (SSRF) guard bypass vulnerability that allows authenticated attackers to reach private network addresses by exploiting a DNS rebinding attack against the two-phase URL validation and connection flow. The SSRF guard validates a hostname's resolved IP addresses but discards them before the actual HTTP connection is opened, allowing an attacker who controls authoritative DNS to return a public address during validation and a private address during the subsequent independent socket-level DNS resolution, causing the guard to pass while the outbound connection reaches internal infrastructure such as cloud instance metadata endpoints.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 17:13 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ridafkih/keeper.sh | product |
| https://github.com/ridafkih/keeper.sh/security/ad… | vendor-advisory |
| https://github.com/ridafkih/keeper.sh/commit/aea1… | patch |
| https://www.vulncheck.com/advisories/keeper-sh-ca… | third-party-advisory |
Impacted products
Date Public
2026-08-19 00:00
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