CVE-2026-55185

MEDIUMPre-NVD 5.15.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 5.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (46th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-64137 (ENISA EUVD) · GHSA-m999-j542-5w3r (GitHub Security Advisories) · GO-2026-5500 (OSV.dev)Source: ENISA EUVD

5.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 5.1Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

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
5.1MEDIUMmedium confidence
EG Risk
39
EG Risk 39/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity51% × 45%
Impact severity (EG Severity): CVSS 5.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
46th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.1): severity, escalated by confirmed exploitation. This CVE's 5.1 is its impact severity (EG Severity), not escalated.

EG Severity
5.1 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 19, 2026

Last Modified

October 12, 2026

Advisory Details (4)

Auto-updated Aug 21, 2026
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 pull request

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 advisoryMentions a patch (unverified)

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 rangeFix by version rangeDependents
miniflux.app—
  • every version on: no fix on record
—
miniflux.app/v2—
  • every version up to 2.3.1: fixed in 2.3.1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
miniflux2.2.10-1 ... 2.3.3-1 (13 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
miniflux2.2.10-1 ... 2.3.0-1 (11 versions)
  • every version up to 2.3.2-1: fixed in 2.3.2-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 38× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-10-30 11:25 UTCOSV refresh
  3. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  4. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  5. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  6. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  7. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  8. 2026-10-25 14:19 UTCEG score recompute
  9. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  10. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  11. 2026-10-22 21:16 UTCEG score recompute
  12. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  13. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  14. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  15. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  16. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  17. 2026-10-18 03:30 UTCEG score recompute
  18. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  19. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  20. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  21. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  22. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  24. 2026-10-12 15:56 UTCEG score recompute
  25. 2026-10-11 19:39 UTCEG score recompute
Show 56 more
  1. 2026-10-11 16:54 UTCEG score recompute
  2. 2026-10-11 14:17 UTCEG score recompute
  3. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  4. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  5. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  6. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  7. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  8. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  9. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  10. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  11. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  12. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  13. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  14. 2026-09-30 20:04 UTCEG score recompute
  15. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  16. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  17. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  18. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  19. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  20. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  21. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  22. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  23. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  24. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  25. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  26. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  27. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  28. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  29. 2026-09-13 13:01 UTCEG score recompute
  30. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  31. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  32. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  33. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  34. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  35. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  36. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  37. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  38. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  39. 2026-08-30 20:46 UTCEG score recompute
  40. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  41. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  42. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  43. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  44. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  45. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  46. 2026-08-24 20:29 UTCEG score recompute
  47. 2026-08-24 19:51 UTCEG score recompute
  48. 2026-08-23 23:32 UTCEG score recompute
  49. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  50. 2026-08-21 21:25 UTCEG score recompute
  51. 2026-08-21 20:34 UTCEG score recomputeFirst assessed: 5.1 MEDIUM
  52. 2026-08-21 20:34 UTCMITRE cvelistV5CVSS v3 → 5.1 · CVSS v4 → 5.1
  53. 2026-08-01 05:01 UTCEG score recompute
  54. 2026-07-26 16:47 UTCEG score recompute
  55. 2026-07-23 03:20 UTCEG score recompute
  56. 2026-06-19 21:24 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-55185?
CVE-2026-55185 is a medium-severity vulnerability; its CVE record was 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 the CVE record for CVE-2026-55185 published?
The CVE record for CVE-2026-55185 was published on June 19, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 12, 2026; the record at its source may have been updated since.
Is CVE-2026-55185 actively exploited?
CVE-2026-55185 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-55185?
CVE-2026-55185 has a CVSS base score of 5.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-55185?
A fix for CVE-2026-55185 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-55185 are linked in the Vendor Advisories panel on this page.

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