Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, an authenticated user can misuse the legacy session export API to retrieve details for a restricted session without access to that session, as long as the containing event is accessible. The missing access check can disclose session metadata such as the title, description, and conveners. This issue is fixed in version 3.3.13.
CVE-2026-107395
MEDIUMPre-NVD 4.34.3
EchelonGraph scoreLOW confidence
This medium-severity CVE scores 4.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). 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: secondary
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 4.3Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 4.3
- EG Score
- 4.3MEDIUMlow confidence
- EG Risk
- 19EG 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 computedSeverity43% × 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
- 13th
- 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
October 8, 2026
Last Modified
October 9, 2026
Advisory Details (3)
Auto-updated Oct 8, 2026Patch available. Sources: github_release, github, github_commit.
githubMentions a patch (unverified)
Missing access check in legacy session export API · Advisory · indico/indico · GitHub
https://github.com/indico/indico/security/advisories/GHSA-6p4f-j8j6-463qgithub_release Patch Available
v3.3.13
Patch available: indico/indico v3.3.13
https://github.com/indico/indico/releases/tag/v3.3.13github_commit Patch Available
commit 524e8e93eadc (indico/indico)
Patch available: indico/indico v3.3.13 (contains commit 524e8e93eadc)
https://github.com/indico/indico/commit/524e8e93eadcd8484905b1147020a35f5dce6038Vendor Advisories for CVE-2026-107395(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| indico | 0.98-rc1 ... 3.3.9 (100 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 5× in last 7d / 5× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.
- 2026-10-09 20:06 UTCEPSS rescore
- 2026-10-09 12:34 UTCEG score recompute
- 2026-10-09 11:54 UTCEG score recompute
- 2026-10-08 20:19 UTCEG score recompute
- 2026-10-08 20:03 UTCEG score recompute
Related CVEs(same product + same CWE)
Same product
10 shownPyPI:indico
Frequently asked(5)
What is CVE-2026-107395?
CVE-2026-107395 is a medium vulnerability published on October 8, 2026. Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, an authenticated user can misuse the legacy session export API to retrieve details for a restricted session without access to that session, as long as the containing…
When was CVE-2026-107395 disclosed?
CVE-2026-107395 was first published on October 8, 2026, with the most recent update on October 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-107395 actively exploited?
CVE-2026-107395 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-107395?
CVE-2026-107395 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-107395?
A fix for CVE-2026-107395 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-107395 are linked in the Vendor Advisories panel on this page.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-107395
Is Your Infrastructure Affected by CVE-2026-107395?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.