CVE-2026-55863

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (40th 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
Elevated
5.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (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: 0.5%CVSS: 5.3Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

motionEye (mEye) is an online interface for a piece of software called "motion," which is a video surveillance program with motion detection. Prior to 0.44.0, the ActionHandler.post() method in motioneye/handlers/action.py lacks the BaseHandler.auth() decorator, allowing an unauthenticated remote attacker to send requests to /action//. The endpoint can trigger snapshot, record_start, and record_stop actions. When an administrator has configured action scripts, the same endpoint can invoke PTZ controls, alarm actions, lighting actions, and other predefined commands, and configured remote motionEye cameras can allow server-side requests to the remote camera service. This issue is fixed in version 0.44.0.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
55
EG Risk 55/100

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 (value × EchelonGraph’s weight)
Severity53% × 45%
The EG Score, 5.3 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track 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). 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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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 23, 2026

Last Modified

September 30, 2026

Advisory Details (3)

Auto-updated Sep 15, 2026
Patch available. Sources: github, github_pr, github_release.
GitHub release Patch Available

0.44.0

Patch available: motioneye-project/motioneye 0.44.0

https://github.com/motioneye-project/motioneye/releases/tag/0.44.0
GitHub pull request Patch Available

Replace URL signature auth with sessions and HMAC peer authentication

Patch available: motioneye-project/motioneye 0.44.0b2 (PR #3332 merged 2026-05-21)

https://github.com/motioneye-project/motioneye/pull/3332
GitHub advisoryMentions a patch (unverified)

Missing authentication on ActionHandler allows unauthenticated camera action execution · Advisory · motioneye-project/motioneye · GitHub

https://github.com/motioneye-project/motioneye/security/advisories/GHSA-j67x-q29f-qcvv

Vendor Advisories for CVE-2026-55863(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)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
motioneye0.27 ... 0.44.0b3 (65 versions)
  • every version up to 0.44.0: fixed in 0.44.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 33× 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. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-10-12 15:55 UTCEG score recompute
  3. 2026-10-11 19:38 UTCEG score recompute
  4. 2026-10-11 16:53 UTCEG score recompute
  5. 2026-10-11 14:16 UTCEG score recompute
  6. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  7. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  8. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  9. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  13. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  14. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  15. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  16. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  17. 2026-09-30 18:11 UTCEG score recompute
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  19. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  20. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  21. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  22. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  23. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  24. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  25. 2026-09-23 11:58 UTCEG score recompute
Show 12 more
  1. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  2. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  3. 2026-09-18 10:23 UTCEG score recompute
  4. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  5. 2026-09-16 15:33 UTCEG score recompute
  6. 2026-09-16 15:06 UTCEG score recompute
  7. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  8. 2026-09-15 17:34 UTCEG score recompute
  9. 2026-07-31 04:11 UTCEG score recompute
  10. 2026-07-26 15:51 UTCEG score recompute
  11. 2026-07-23 03:20 UTCEG score recompute
  12. 2026-06-23 19:21 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-55863?
CVE-2026-55863 is a medium-severity vulnerability; its CVE record was published on June 23, 2026. motionEye (mEye) is an online interface for a piece of software called "motion," which is a video surveillance program with motion detection. Prior to 0.44.0, the ActionHandler.post() method in motioneye/handlers/action.py lacks the BaseHandler.auth() decorator, allowing an unauthenticated remote…
When was the CVE record for CVE-2026-55863 published?
The CVE record for CVE-2026-55863 was published on June 23, 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 September 30, 2026; the record at its source may have been updated since.
Is CVE-2026-55863 actively exploited?
CVE-2026-55863 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-55863?
CVE-2026-55863 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-55863?
A fix for CVE-2026-55863 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-55863 are linked in the Vendor Advisories panel on this page.

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