CVE-2026-100698

MEDIUMPre-NVD 5.85.8—
EchelonGraph scoreHIGH confidence

Score 5.8 from GitHub Security Advisory published 2026-09-26. A secondary CVSS source baseline 5.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 5.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
5.8
EG Score
5.8MEDIUMhigh confidence
EG Risk
57
EG Risk 57/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity58% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.3%
EPSS %ILE
18th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 26, 2026

Last Modified

September 30, 2026

Advisory Details (2)

Auto-updated Sep 26, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Adminer before 6.0.2 Privileged-Port SSRF via host_port Regex | Advisories | VulnCheck

https://www.vulncheck.com/advisories/adminer-before-6.0.2-privileged-port-ssrf-via-host-port-regex
github Patch Available🟡 PoC Available

Privileged-port SSRF via host_port regex non-match · Advisory · vrana/adminer · GitHub

https://github.com/vrana/adminer/security/advisories/GHSA-rwxg-xph9-82cj

Vendor Advisories for CVE-2026-100698(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
adminer5.2.1+dfsg-1 ... 6.0.1-1 (9 versions)
  • every version up to 6.0.2-1: fixed in 6.0.2-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 25× in last 7d / 32× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-05 05:32 UTCEG score recompute
  2. 2026-10-05 05:32 UTCGHSA enrichment
  3. 2026-10-04 23:21 UTCEPSS rescore
  4. 2026-10-04 07:45 UTCEG score recompute
  5. 2026-10-04 07:45 UTCGHSA enrichment
  6. 2026-10-03 14:25 UTCEPSS rescore
  7. 2026-10-03 09:58 UTCEG score recompute
  8. 2026-10-03 09:58 UTCGHSA enrichment
  9. 2026-10-02 12:02 UTCEG score recompute
  10. 2026-10-02 12:02 UTCGHSA enrichment
  11. 2026-10-01 19:49 UTCEPSS rescore
  12. 2026-10-01 14:13 UTCGHSA enrichment
  13. 2026-09-30 16:27 UTCEG score recompute
  14. 2026-09-30 16:27 UTCGHSA enrichment
  15. 2026-09-30 15:31 UTCEG score recompute
  16. 2026-09-30 15:31 UTCGHSA enrichment
  17. 2026-09-30 15:02 UTCEPSS rescore
  18. 2026-09-30 12:33 UTCEG score recompute
  19. 2026-09-30 12:33 UTCGHSA enrichment
  20. 2026-09-29 15:20 UTCEPSS rescore
  21. 2026-09-29 14:46 UTCEG score recompute
  22. 2026-09-29 14:46 UTCGHSA enrichment
  23. 2026-09-28 16:58 UTCEG score recompute
  24. 2026-09-28 16:57 UTCGHSA enrichment
  25. 2026-09-28 13:50 UTCEPSS rescore
Show 7 more
  1. 2026-09-28 10:03 UTCEG score recompute
  2. 2026-09-28 10:03 UTCGHSA enrichment
  3. 2026-09-27 12:15 UTCEG score recompute
  4. 2026-09-27 12:15 UTCGHSA enrichment
  5. 2026-09-26 14:29 UTCEG score recompute
  6. 2026-09-26 13:34 UTCEG score recompute
  7. 2026-09-26 13:30 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-100698?
CVE-2026-100698 is a medium vulnerability published on September 26, 2026. 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…
When was CVE-2026-100698 disclosed?
CVE-2026-100698 was first published on September 26, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100698 actively exploited?
CVE-2026-100698 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (18th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100698?
CVE-2026-100698 has a CVSS base score of 5.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100698?
A fix for CVE-2026-100698 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-100698 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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