Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.56.0 until 1.107.6 and 2.44.0, applications that opt attacker-influenced URLs into local network access through FileUrl with force_download='allow-local' or web_fetch_tool with allow_local_urls=True can bypass the cloud-metadata blocklist by appending an IPv6 zone identifier to an IPv6 metadata address. IPv6Address equality and hashing include the zone identifier, so the blocklist comparison fails even though the network stack ignores the zone on a non-link-local destination and reaches the metadata service, potentially exposing cloud IAM credentials. The opt-in settings are disabled by default, and the issue requires an IPv6-enabled environment. This issue is fixed in versions 1.107.6 and 2.44.0.
CVE-2026-107289
“—” beside the score: it is equal to the CVSS score beside it.
Score 6.8 from GitHub Security Advisory (severity: MODERATE) published 2026-10-08. A secondary CVSS source baseline 6.8; sources differ by 0.0.
Also known asEUVD-2026-95077 (ENISA EUVD) · GHSA-vmxc-h2x2-jmf3 (GitHub Security Advisories) · PYSEC-2026-4282 (OSV.dev) · PYSEC-2026-4291 (OSV.dev)Source: ENISA EUVD
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.8
- EG Score
- 6.8MEDIUMhigh confidence
- EG Risk
- 31EG Risk 31/100
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)Severity68% × 45%Impact severity (EG Severity): CVSS 6.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.4% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.Exploitation none (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: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.4%
- EPSS %ILE
- 33rd
- 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 (6.8): severity, escalated by confirmed exploitation. This CVE's 6.8 is its impact severity (EG Severity), not escalated.
- EG Severity
- 6.8 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 0.4% 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 every mission impact level.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 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). 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
October 8, 2026
Last Modified
October 13, 2026
Advisory Details (7)
Auto-updated Oct 8, 2026v2.44.0 (2026-09-16)
Patch available: pydantic/pydantic-ai v2.44.0
https://github.com/pydantic/pydantic-ai/releases/tag/v2.44.0v1.107.6 (2026-09-16)
Patch available: pydantic/pydantic-ai v1.107.6
https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.6commit 4da70591460f (pydantic/pydantic-ai)
Patch available: pydantic/pydantic-ai v1.107.6 (contains commit 4da70591460f)
https://github.com/pydantic/pydantic-ai/commit/4da70591460f51a8c4f128eaeef70a33340dbd55commit 02157e1b87bd (pydantic/pydantic-ai)
Patch available: pydantic/pydantic-ai v2.44.0 (contains commit 02157e1b87bd)
https://github.com/pydantic/pydantic-ai/commit/02157e1b87bd45d3f2e111ce07afdf89f9fb0e5bNormalize IPv6 zone identifiers in URL validation (v1 backport)
Patch available: pydantic/pydantic-ai v1.107.6 (PR #8402 merged 2026-09-16)
https://github.com/pydantic/pydantic-ai/pull/8402Normalize IPv6 zone identifiers in URL validation
Patch available: pydantic/pydantic-ai v2.44.0 (PR #8401 merged 2026-09-16)
https://github.com/pydantic/pydantic-ai/pull/8401SSRF cloud-metadata blocklist bypass via IPv6 zone identifiers · Advisory · pydantic/pydantic-ai · GitHub
https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-vmxc-h2x2-jmf3Vendor Advisories for CVE-2026-107289(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(2)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| pip | pydantic-ai @ 1.107.6 (fixes >= 1.56.0, < 1.107.6) | — | ghsa |
| pip | pydantic-ai @ 2.44.0 (fixes >= 2.0.0b1, < 2.44.0) | — | 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
(2 across 1 ecosystem)
PyPI(2)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| pydantic-ai | 2.0.0 ... 2.9.1 (60 versions) |
| — |
| pydantic-ai-slim | 2.0.0 ... 2.9.1 (60 versions) |
| — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 38× 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.
- 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-11-01 08:00 UTCGHSA enrichmentGHSA-vmxc-h2x2-jmf3 · GitHub severity MODERATE · GitHub CVSS 6.8
- 2026-11-01 08:00 UTCEG score recompute
- 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-27 11:55 UTCOSV refresh
- 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-25 14:54 UTCEG score recompute
- 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-10-18 05:07 UTCEG score recompute
- 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.3% · 24th percentile
Show 13 moreShow fewer
- 2026-10-12 16:38 UTCEG score recompute
- 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-10-11 20:14 UTCEG score recompute
- 2026-10-11 18:26 UTCEG score recompute
- 2026-10-11 15:00 UTCEG score recompute
- 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-10-11 00:31 UTCEG score recompute
- 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-10-09 22:33 UTCEG score recompute
- 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-10-08 16:25 UTCEG score recompute
- 2026-10-08 15:37 UTCEG score recomputeFirst assessed: 6.8 MEDIUM
- 2026-10-08 15:36 UTCMITRE cvelistV5first tracked
Related CVEs(same product + same CWE)
Same product
10 shownPyPI:pydantic-ai
Frequently asked(5)
What is CVE-2026-107289?
When was the CVE record for CVE-2026-107289 published?
Is CVE-2026-107289 actively exploited?
What is the CVSS score of CVE-2026-107289?
How do I remediate CVE-2026-107289?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-107289
Is Your Infrastructure Affected by CVE-2026-107289?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.