CVE-2026-48545 json
Gradio < 6.15.0 Cookie Injection via Shared Proxy Client
published 2026-05-27 5 mo ago modified 2026-11-08 19 h ago also EUVD-2026-32547 , GHSA-7hp7-4p35-3cx2 , PYSEC-2026-2178
- cvss
- 6.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 28%
- public exploits
- 0
- none known
Summary
Gradio before version 6.15.0 contains a cookie injection vulnerability that allows remote attackers to perform cross-Space session fixation by exploiting a shared module-level HTTP client used across all users in the reverse proxy endpoint. Attackers controlling any HF Space can return a parent-domain cookie that the shared client stores and automatically replays into all subsequent proxy requests to other legitimate Spaces, affecting all users of the same Gradio deployment.
Patch / fix
- pypi gradio 6.15.0
- gradio-app gradio 6.15.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 5 mo ago
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/gradio-app/gradio/issues/13369 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.6 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |
| CNA | 4.0 | 7.6 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |
| OSV | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | gradio | <6.15.0 |
6.15.0 |
Affected products
- gradio-app gradio
Classification
- Weakness
-
- CWE-384 Session Fixation
References
-
github.com
/gradio-app/gradio/pull/13384
issue-tracking, patch, web
-
github.com
/gradio-app/gradio/commit/feb7237d01f359d2ad4ee42d00344e61692b3b39
patch, web
-
github.com
/gradio-app/gradio/issues/13369
issue-tracking, exploit, web, report
-
github.com
/gradio-app/gradio/releases/tag/gradio%406.15.0
release-notes, product, advisory
-
vulncheck.com
/advisories/gradio-cookie-injection-via-shared-pro
third-party-advisory, web, broken-link, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-48545
advisory
-
github.com
/gradio-app/gradio
package
-
github.com
/gradio-app/gradio/releases/tag/gradio@6.15.0
web
-
github.com
/advisories/GHSA-7hp7-4p35-3cx2
advisory
Sources
- CVE List CVE-2026-48545
- GitHub Advisory GHSA-7hp7-4p35-3cx2
- NVD CVE-2026-48545
- OSV PYSEC-2026-2178
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