CVE-2026-73657

MEDIUMPre-NVD 4.24.2—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (6th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
4.2EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 4.2Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Trigger.dev is a platform for building and deploying fully managed AI agents and workflows. From 4.4.2 until 4.5.0-rc.4, POST /api/v1/runs/:runParam/replay in apps/webapp/app/routes/api.v1.runs.$runParam.replay.ts uses prisma.taskRun.findUnique({ where: { friendlyId: runParam } }) without a runtimeEnvironmentId filter, then ReplayTaskRunService in apps/webapp/app/v3/services/replayTaskRun.server.ts replays the selected run in the victim environment. Any valid environment API key can therefore replay another tenant's run by friendlyId, consuming victim resources and repeating side effects; when payloadType: "application/store" is used, overrideExistingPayloadPacket() calls conditionallyImportPacket() on existingTaskRun.payload without an integrity check, so payload bytes overwritten through a separate object-store path-traversal vulnerability become attacker-controlled input to the victim task. This issue is fixed in version 4.5.0-rc.4.

CVSS v3
4.2
EG Score
4.2MEDIUMmedium confidence
EG Risk
19
EG Risk 19/100CISA SSVC

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
Severity42% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
6th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 13, 2026

Last Modified

September 8, 2026

Advisory Details (4)

Auto-updated Aug 13, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github, github_pr.
github_release Patch Available

trigger.dev v4.5.0-rc.4

Patch available: triggerdotdev/trigger.dev v4.5.0-rc.4 (pre-release)

https://github.com/triggerdotdev/trigger.dev/releases/tag/v4.5.0-rc.4
github_commit Patch Available

commit e1950778e2f2 (triggerdotdev/trigger.dev)

Patch available: triggerdotdev/trigger.dev v4.5.0-rc.4 (contains commit e1950778e2f2)

https://github.com/triggerdotdev/trigger.dev/commit/e1950778e2f2007e2d432b8f8a8fc89531c51f19
github_pr Patch Available

feat(webapp): mollifier API mutations on buffered runs

Patch available: triggerdotdev/trigger.dev v4.5.0-rc.4 (PR #3756 merged 2026-06-01)

https://github.com/triggerdotdev/trigger.dev/pull/3756
githubMentions a patch (unverified)🟡 PoC Available

Cross-tenant payload poisoning via packet write + replay · Advisory · triggerdotdev/trigger.dev · GitHub

https://github.com/triggerdotdev/trigger.dev/security/advisories/GHSA-jx48-qfwm-xq67

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 43× 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.

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. 4 repeat rows among the latest 94 are merged into the row they repeat.

  1. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  8. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  24. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  1. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  9. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  20. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  25. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  26. 2026-09-05 17:18 UTCEG score recompute
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  57. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  65. 2026-08-13 21:31 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-73657?
CVE-2026-73657 is a medium vulnerability published on August 13, 2026. Trigger.dev is a platform for building and deploying fully managed AI agents and workflows. From 4.4.2 until 4.5.0-rc.4, POST /api/v1/runs/:runParam/replay in apps/webapp/app/routes/api.v1.runs.$runParam.replay.ts uses prisma.taskRun.findUnique({ where: { friendlyId: runParam } }) without a…
When was the CVE record for CVE-2026-73657 published?
The CVE record for CVE-2026-73657 was published on August 13, 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 8, 2026; the record at its source may have been updated since.
Is CVE-2026-73657 actively exploited?
CVE-2026-73657 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73657?
CVE-2026-73657 has a CVSS base score of 4.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73657?
A fix for CVE-2026-73657 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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