TypeBot is a chatbot builder tool. Versions prior to 3.17.0 expose a deprecated public upload endpoint at GET /api/v1/typebots/{typebotId}/blocks/{blockId}/storage/upload-url that accepts an attacker-controlled filePath and returns a presigned S3 PUT URL for that exact key. Because the endpoint only checks that the referenced typebot is public and that the referenced block is a file input block, an unauthenticated attacker who knows a valid public typebotId and blockId can request presigned upload URLs for arbitrary objects in the shared bucket, including private/... and other tenants' public/... paths. Version 3.17.0 fixes this issue.
CVE-2026-48763
“—” beside the score: it is equal to the CVSS score beside it.
This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (44th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2026-56979 (ENISA EUVD)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
- 8.2
- EG Score
- 8.2HIGHmedium confidence
- EG Risk
- 68EG Risk 68/100
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)Severity82% × 45%Impact severity (EG Severity): CVSS 8.2 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.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
- 44th
- 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 (8.2): severity, escalated by confirmed exploitation. This CVE's 8.2 is its impact severity (EG Severity), not escalated.
- EG Severity
- 8.2 HIGHCVSS-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
- 0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-30). 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; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days 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; 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.
The score's inputs: 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
August 11, 2026
Last Modified
October 23, 2026
Advisory Details (4)
Auto-updated Aug 11, 2026Arbitrary S3 Object Write in deprecated public upload endpoint via attacker-controlled filePath · Advisory · baptisteArno/typebot.io · GitHub
https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-m7f5-3wcm-x2c4v3.17.0
Patch available: baptisteArno/typebot.io v3.17.0
https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0🐛 Fix credential access control and remove vulnerable S3 upload endpoint
Patch available: baptisteArno/typebot.io v3.17.0 (PR #2459 merged 2026-04-15)
https://github.com/baptisteArno/typebot.io/pull/2459commit 7ae4c007d098 (baptisteArno/typebot.io)
Patch available: baptisteArno/typebot.io v3.17.0 (contains commit 7ae4c007d098)
https://github.com/baptisteArno/typebot.io/commit/7ae4c007d0987d2ca907b47e1b7418db62b8a157Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× 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 100 of 135 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. None are among the latest 100 rows. The 35 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-10-30 16:59 UTCEG score recompute
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-10-25 14:23 UTCEG score recompute
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-23 20:27 UTCEG score recompute
- 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-10-18 03:34 UTCEG score recompute
- 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
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- 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
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- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
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- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-12 16:00 UTCEG score recompute
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- 2026-10-11 16:58 UTCEG score recompute
- 2026-10-11 14:22 UTCEG score recompute
- 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
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- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-06 17:35 UTCEG score recompute
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
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- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
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- 2026-10-03 20:26 UTCEG score recompute
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
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- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
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- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
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- 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
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- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
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- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
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- 2026-09-25 03:45 UTCEG score recompute
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- 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-09-22 23:50 UTCEG score recompute
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- 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
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- 2026-09-15 15:48 UTCEG score recompute
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- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
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- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-09-11 10:14 UTCEG score recompute
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- 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
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- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
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- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
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Frequently asked(5)
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Dependency Blast Radius
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