CVE-2026-33935

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.5 under NVD CVSS v3. 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 NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated

Also known asEUVD-2026-16521 (ENISA EUVD)Source: ENISA EUVD

7.5EG
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: 7.5Exploit: No code on recordExposed services: Not assessed

The CVE record names the fixed release — apply it.

MyTube is a self-hosted downloader and player for several video websites Prior to version 1.8.72, an unauthenticated attacker can lock out administrator and visitor accounts from password-based authentication by triggering failed login attempts. The application exposes three password verification endpoints, all of which are publicly accessible. All three endpoints share a single file-backed login attempt state stored in login-attempts.json. When any endpoint records a failed authentication attempt via recordFailedAttempt(), the shared login attempt state is updated, increasing the failedAttempts counter and adjusting the associated timestamps and cooldown values. Before verifying a password, each endpoint calls canAttemptLogin(). This function checks the shared JSON file to determine whether a cooldown period is active. If the cooldown has not expired, the request is rejected before the password is validated. Because the failed attempt counter and cooldown timer are globally shared, failed authentication attempts against any endpoint affect all other endpoints. An attacker can exploit this by repeatedly sending invalid authentication requests to any of these endpoints, incrementing the shared counter and waiting for the cooldown period between attempts. By doing so, the attacker can progressively increase the lockout duration until it reaches 24 hours, effectively preventing legitimate users from authenticating. Once the maximum lockout is reached, the attacker can maintain the denial of service indefinitely by waiting for the cooldown to expire and sending another failed attempt, which immediately triggers another 24-hour lockout if no successful login occurred in the meantime. Version 1.8.72 fixes the vulnerability.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
50
EG Risk 50/100

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)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 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: The CVE record names the fixed release. 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 (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). 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, and whom BOD 26-04 binds: 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).

The CVE record names the fixed release. 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.

The score's inputs: 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

March 27, 2026

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Aug 2, 2026
Fix named in the CVE record. Sources: github, github_commit.
GitHub advisoryMentions a patch (unverified)

Unauthenticated Account Lockout via Shared Login Attempt State · Advisory · franklioxygen/MyTube · GitHub

https://github.com/franklioxygen/MyTube/security/advisories/GHSA-6w95-qgc4-5jxf
GitHub commit

commit dd7b4a611fcc (franklioxygen/MyTube)

Fix landed in franklioxygen/MyTube commit dd7b4a611fcc — awaiting tagged release

https://github.com/franklioxygen/MyTube/commit/dd7b4a611fcc5b25a569f379be9a503eb413b6aa
GitHub commit

commit 752bc7f0ac83 (franklioxygen/MyTube)

Fix landed in franklioxygen/MyTube commit 752bc7f0ac83 — awaiting tagged release

https://github.com/franklioxygen/MyTube/commit/752bc7f0ac83df8c881e6b6d5dd6f36bb274ee58
GitHub commit

commit 4d89b146b16d (franklioxygen/MyTube)

Fix landed in franklioxygen/MyTube commit 4d89b146b16d — awaiting tagged release

https://github.com/franklioxygen/MyTube/commit/4d89b146b16d08f27d8fd3e0a9122b109335deb1
Web page

MyTube/backend/src/services/loginAttemptService.ts at 941035909ee3f96a6f80f38acf70cbc3e66b5098 · franklioxygen/MyTube · GitHub

https://github.com/franklioxygen/MyTube/blob/941035909ee3f96a6f80f38acf70cbc3e66b5098/backend/src/services/loginAttemptService.ts#L13

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 39× 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.

Showing the most recent 98 of 108 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat. The 10 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  3. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  4. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  5. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  6. 2026-10-27 18:25 UTCEG score recompute
  7. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  8. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  9. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  10. 2026-10-25 14:34 UTCEG score recompute
  11. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  12. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  13. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  14. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  15. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  16. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  17. 2026-10-19 15:38 UTCEG score recompute
  18. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  19. 2026-10-18 03:46 UTCEG score recompute
  20. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  21. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  22. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  23. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  24. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  25. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
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  1. 2026-10-12 15:46 UTCEG score recompute
  2. 2026-10-11 19:55 UTCEG score recompute
  3. 2026-10-11 17:08 UTCEG score recompute
  4. 2026-10-11 14:35 UTCEG score recompute
  5. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  6. 2026-10-11 04:01 UTCOSV refresh
  7. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  8. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  9. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  10. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  11. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  12. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  13. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  14. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  15. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  16. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  17. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  18. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  19. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  20. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  21. 2026-09-21 16:19 UTCOSV refresh
  22. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  23. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  24. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  25. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  26. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  27. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  28. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  29. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  30. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
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  34. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  35. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  36. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  37. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  38. 2026-09-02 13:14 UTCOSV refresh
  39. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  40. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  41. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  42. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  43. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
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  54. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  55. 2026-08-16 10:03 UTCEG score recompute
  56. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  57. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  58. 2026-08-14 06:21 UTCEG score recompute
  59. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  60. 2026-08-12 20:39 UTCEG score recompute
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  62. 2026-08-11 20:47 UTCEG score recompute
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  64. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  65. 2026-08-09 16:56 UTCEG score recompute
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  69. 2026-08-08 03:21 UTCEG score recompute
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  71. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  72. 2026-08-06 00:49 UTCEG score recompute
  73. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.5% · 42nd percentile

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Frequently asked(5)

What is CVE-2026-33935?
CVE-2026-33935 is a high-severity vulnerability; its CVE record was published on March 27, 2026. MyTube is a self-hosted downloader and player for several video websites Prior to version 1.8.72, an unauthenticated attacker can lock out administrator and visitor accounts from password-based authentication by triggering failed login attempts. The application exposes three password verification…
When was the CVE record for CVE-2026-33935 published?
The CVE record for CVE-2026-33935 was published on March 27, 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 June 17, 2026; the record at its source may have been updated since.
Is CVE-2026-33935 actively exploited?
CVE-2026-33935 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-2026-33935?
CVE-2026-33935 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-33935?
The CVE record for CVE-2026-33935 names the fix: "Version 1.8.72 fixes the vulnerability."

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