CVE-2026-55185

MEDIUMPre-NVD 5.15.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 64% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
5.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.1Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Miniflux 2 is an open source feed reader. Prior to 2.3.1, IsRelativePath in internal/urllib/url.go accepts redirect targets containing backslashes because Go URL parsing treats them as path characters. Browser backslash normalization converts them to forward slashes. An unauthenticated attacker can provide such a redirect_url value to the login flow, bypass the relative-path and host checks, and redirect a victim to an attacker-controlled external site. This issue is fixed in version 2.3.1.

CVSS v3
5.1
EG Score
5.1(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

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
Severity51% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

June 19, 2026

Last Modified

August 24, 2026

Advisory Details (4)

Auto-updated Aug 21, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github, github_pr, github_commit.
github_release Patch Available

Miniflux 2.3.1

Patch available: miniflux/v2 2.3.1

https://github.com/miniflux/v2/releases/tag/2.3.1
github_commit

commit c896bafdaa19 (miniflux/v2)

Fix landed in miniflux/v2 commit c896bafdaa19 — awaiting tagged release

https://github.com/miniflux/v2/commit/c896bafdaa19c3f280b02b1059f84706495f1949
github_pr

fix(urllib): reject backslashes in relative path validation

Fix merged in miniflux/v2 PR #4362 on 2026-05-27 — awaiting tagged release

https://github.com/miniflux/v2/pull/4362
github Patch Available🟡 PoC Available

Open Redirect Bypass in miniflux-v2 · Advisory · miniflux/v2 · GitHub

https://github.com/miniflux/v2/security/advisories/GHSA-m999-j542-5w3r

Vendor Advisories for CVE-2026-55185(1)

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

Affected Packages

(4 across 3 ecosystems)
Go(2)
PackageVulnerable rangeFixed inDependents
miniflux.app———
miniflux.app/v2—2.3.1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
miniflux2.2.10-1 ... 2.3.2-1 (12 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
miniflux2.2.10-1 ... 2.3.0-1 (11 versions)2.3.2-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 23× 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. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-10 09:35 UTCEPSS rescore
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-07 16:01 UTCEPSS rescore
  5. 2026-09-06 13:47 UTCEPSS rescore
  6. 2026-09-04 05:06 UTCEPSS rescore
  7. 2026-09-02 14:12 UTCEPSS rescore
  8. 2026-09-01 13:54 UTCEPSS rescore
  9. 2026-09-01 04:40 UTCEPSS rescore
  10. 2026-08-30 20:46 UTCEG score recompute
  11. 2026-08-30 19:17 UTCEPSS rescore
  12. 2026-08-30 01:22 UTCEPSS rescore
  13. 2026-08-28 21:41 UTCEPSS rescore
  14. 2026-08-27 14:25 UTCEPSS rescore
  15. 2026-08-26 14:46 UTCEPSS rescore
  16. 2026-08-25 13:49 UTCEPSS rescore
  17. 2026-08-24 20:29 UTCEG score recompute
  18. 2026-08-24 19:51 UTCEG score recompute
  19. 2026-08-23 23:32 UTCEG score recompute
  20. 2026-08-23 00:19 UTCEPSS rescore
  21. 2026-08-21 21:25 UTCEG score recompute
  22. 2026-08-21 20:34 UTCEG score recompute▲ 5.10
  23. 2026-08-21 20:34 UTCMITRE cvelistV5CVSS v3 → 5.1 · CVSS v4 → 5.1
  24. 2026-08-01 05:01 UTCEG score recompute
  25. 2026-07-26 16:47 UTCEG score recompute
Show 2 more
  1. 2026-07-23 03:20 UTCEG score recompute
  2. 2026-06-19 21:24 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-55185?
CVE-2026-55185 is a medium vulnerability published on June 19, 2026. Miniflux 2 is an open source feed reader. Prior to 2.3.1, IsRelativePath in internal/urllib/url.go accepts redirect targets containing backslashes because Go URL parsing treats them as path characters. Browser backslash normalization converts them to forward slashes. An unauthenticated attacker can…
When was CVE-2026-55185 disclosed?
CVE-2026-55185 was first published in the National Vulnerability Database on June 19, 2026, with the most recent update on August 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55185 actively exploited?
CVE-2026-55185 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 64.0% of all scored CVEs.
What is the CVSS score of CVE-2026-55185?
CVE-2026-55185 has a CVSS v3 base score of 5.1 (NVD).
How do I remediate CVE-2026-55185?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55185, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-55185

Explore →

Is Your Infrastructure Affected by CVE-2026-55185?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs