pyLoad is a free and open-source download manager written in Python. In versions prior to 0.5.0b3.dev91, pyLoad web interface contained insufficient input validation in both the Captcha script endpoint and the Click'N'Load (CNL) Blueprint. This flaw allowed untrusted user input to be processed unsafely, which could be exploited by an attacker to inject arbitrary content into the web UI or manipulate request handling. The vulnerability could lead to client-side code execution (XSS) or other unintended behaviors when a malicious payload is submitted. user-supplied parameters from HTTP requests were not adequately validated or sanitized before being passed into the application logic and response generation. This allowed crafted input to alter the expected execution flow. CNL (Click'N'Load) blueprint exposed unsafe handling of untrusted parameters in HTTP requests. The application did not consistently enforce input validation or encoding, making it possible for an attacker to craft malicious requests. Version 0.5.0b3.dev91 contains a patch for the issue.
CVE-2025-61773
“—” beside the score: it is equal to the CVSS score beside it.
Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2025-10-09. A secondary CVSS source baseline 8.1; sources differ by 0.0.
Also known asEUVD-2025-33353 (ENISA EUVD) · GHSA-cjjf-27cc-pvmv (GitHub Security Advisories)Source: ENISA EUVD
- CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
A fix is available — apply it.
- CVSS v3
- 8.1
- EG Score
- 8.1HIGHmedium confidence
- EG Risk
- 52EG Risk 52/100
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)Severity81% × 45%Impact severity (EG Severity): CVSS 8.1 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, Track* at medium and Attend at high mission impact.Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
- 43rd
- 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 (8.1): severity, escalated by confirmed exploitation. This CVE's 8.1 is its impact severity (EG Severity), not escalated.
- EG Severity
- 8.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 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, Track* at medium and Attend at high mission impact.
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 no (CISA Vulnrichment) · Technical impact total (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; 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 total (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
October 9, 2025
Last Modified
October 19, 2026
Advisory Details (3)
Auto-updated Sep 16, 2026pyLoad CNL and captcha handlers allow code Injection via unsanitized parameters · Advisory · pyload/pyload · GitHub
https://github.com/pyload/pyload/security/advisories/GHSA-cjjf-27cc-pvmvFix strengthen Input validation in captcha script and CNL Blueprint related to unsafe handling of untrusted input in the web UI
Fix merged in pyload/pyload PR #4624 on 2025-10-02 — awaiting tagged release
https://github.com/pyload/pyload/pull/4624commit 5823327d0b79 (pyload/pyload)
Fix landed in pyload/pyload commit 5823327d0b79 — awaiting tagged release
https://github.com/pyload/pyload/commit/5823327d0b797161c7195a1f660266d30a69f0caPatch Availability(1)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| pip | pyload-ng @ 0.5.0b3.dev91 (fixes < 0.5.0b3.dev91) | — | ghsa |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| pyload-ng | 0.5.0a5.dev528 ... 0.5.0b3.dev90 (95 versions) |
| — |
Weakness Classification(4)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 42× 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 95 of 226 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. 5 repeat rows among the latest 100 are merged into the row they repeat. The 131 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-02 16:43 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-11-01 08:02 UTCGHSA enrichmentGHSA-cjjf-27cc-pvmv · GitHub severity HIGH · GitHub CVSS 8.1
- 2026-11-01 08:02 UTCEG score recompute
- 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-28 16:30 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-27 16:30 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-27 15:43 UTCEG score recompute
- 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-25 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-25 16:14 UTCEG score recompute
- 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-23 16:30 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-19 16:29 UTCEG score recompute
- 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-18 05:22 UTCEG score recompute
- 2026-10-18 02:38 UTCEG score recompute
- 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-16 16:39 UTCEPSS rescoreEPSS 0.4% · 34th percentile
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- 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
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- 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-12 16:52 UTCEG score recompute
- 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-11 20:26 UTCEG score recompute
- 2026-10-11 18:38 UTCEG score recompute
- 2026-10-11 15:13 UTCEG score recompute
- 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-08 17:10 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
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- 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-06 08:19 UTCOSV refresh
- 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
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- 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
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- 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 35th percentile
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- 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-16 15:39 UTCOSV refresh
- 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.4% · 35th percentile
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- 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.4% · 35th percentile
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- 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.4% · 34th percentile
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- 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-28 15:53 UTCOSV refresh
- 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.4% · 31st percentile
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- 2026-08-12 04:04 UTCOSV refresh
- 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-10 23:59 UTCEPSS rescoreEPSS 0.4% · 31st percentile
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- 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.4% · 31st percentile
Related CVEs(same product + same CWE)
Same product
10 shownPyPI:pyload-ng
Frequently asked(5)
What is CVE-2025-61773?
When was the CVE record for CVE-2025-61773 published?
Is CVE-2025-61773 actively exploited?
What is the CVSS score of CVE-2025-61773?
How do I remediate CVE-2025-61773?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-61773
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