CVE-2026-10303 (GCVE-0-2026-10303)

Vulnerability from cvelistv5 – Published: 2026-06-16 18:24 – Updated: 2026-06-17 15:18
VLAI
Title
ServerCo getssl ACME shell script path injection
Summary
In ServerCo getssl version 2.49 and prior, the ACME challenge token returned to the client was not strictly validated against RFC 8555 before being used in challenge-file handling, allowing a maliciously crafted token to influence local path/filename usage during validation. An attacker who can supply ACME challenge responses to getssl (for example, a malicious or compromised CA endpoint, or an on-path adversary able to tamper with that response path) could exploit this to achieve unauthorized file write/path traversal effects, usually with elevated privileges, ultimately allowing for remote command injection. This issue appears related in spirit to CVE-2023-38198, and is an instance of CWE-73, "External control of file name or path." Other ACME shell script handlers may be affected by similar issues.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-17 15:17 UTC
CWE
  • CWE-73 - External control of file name or path
Assigner
runZero CNA under the icscert root
CNA scorecard C 71/100 over 31 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
ServerCo getssl Affected: 0 , ≤ 2.49 (custom)
guessed Create a notification for this product.
Date Public
2026-06-16 18:20
Credits
remy Tod Beardsley of runZero
Show details on NVD website
To clipboard 

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