CVE-2026-100698

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Source
https://cve.org/CVERecord?id=CVE-2026-100698
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100698.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-100698
Aliases
  • GHSA-rwxg-xph9-82cj
Downstream
Published
2026-09-26T13:23:55Z
Modified
2026-09-27T03:47:26Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N CVSS Calculator
Summary
Adminer before 6.0.2 Privileged-Port SSRF via host_port Regex
Details

Adminer 5.5.1 through 6.0.1 improperly parses the login 'server' string in the host_port() function in adminer/include/functions.inc.php. The port capture group requires pure digits anchored to the end of the string, so any server value with a non-digit tail fails the regex and falls back to returning the whole string as the host with an empty port. Because the privileged-port restriction in adminer/include/auth.inc.php inspects only the parsed port, the check is skipped, and the mysqli/mysqlnd client subsequently re-parses host:port from the host string and opens a TCP connection. A remote, unauthenticated attacker who can reach the Adminer login page can submit a crafted value such as 127.0.0.1:80/x to make the server initiate TCP connections to arbitrary internal hosts and privileged ports before credentials are validated, enabling server-side request forgery and blind internal port scanning (connection refused vs. handshake vs. timeout acts as a liveness oracle). This is a regression that re-opens the bypass fixed in 5.5.0 (GHSA-58cq-mgw2-38m5). Fixed in 6.0.2.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-918"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100698.json"
}
References

Affected packages

Git / github.com/vrana/adminer

Affected ranges

Type
GIT
Repo
https://github.com/vrana/adminer
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
bac73e4a126f2e5e82d763da4e233e8ebff82055
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "6.0.2"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v3.*
v3.0.0
v3.0.1
v3.1.0
v3.2.0
v3.2.1
v3.2.2
v3.3.0
v3.3.1
v3.3.2
v3.3.3
v3.3.4
v3.4.0
v3.5.0
v3.5.1
v3.6.0
v3.6.1
v3.6.2
v3.6.3
v3.6.4
v3.7.0
v3.7.1
v4.*
v4.0.0
v4.0.1
v4.0.2
v4.0.3
v4.1.0
v4.16.0
v4.17.0
v4.17.1
v4.2.0
v4.2.1
v4.2.2
v4.2.3
v4.2.4
v4.2.5
v4.3.0
v4.3.1
v4.4.0
v4.5.0
v4.6.0
v4.6.1
v4.6.2
v4.6.3
v4.7.0
v4.7.1
v4.7.2
v4.7.3
v4.7.4
v4.7.5
v4.7.7
v4.7.8
v4.7.9
v4.8.0
v4.8.1
v5.*
v5.0.0
v5.0.1
v5.0.2
v5.0.3
v5.0.4
v5.0.5
v5.0.6
v5.1.0
v5.1.1
v5.2.0
v5.2.1
v5.3.0
v5.4.0
v5.4.1
v5.4.2
v5.4.3
v5.4.4
v5.5.0
v5.5.1
v6.*
v6.0.0
v6.0.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100698.json"