CVE-2026-42159: Flowsint is an open-source OSINT graph exploration tool designed for cybersecurity investigation, transparency

Q: How do I fix CVE-2026-42159?

flowsint: upgrade to 1.2.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-42159 being exploited?

CVE-2026-42159 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-42159 affect?

CVE-2026-42159 affects flowsint. Severity is medium (CVSS 5.4). Flowsint is an open-source OSINT graph exploration tool designed for cybersecurity investigation, transparency, and verification. Prior to 1.2.3, Flowsint allows a user to create investigations, which are used to manage sketches and analyse

Q: How urgent is CVE-2026-42159?

Priority 26/100. Public exploit reference

Routine

MEDIUM 5.4UPGRADE

CVE-2026-42159 is a medium-severity flaw (CVSS 5.4) affecting flowsint. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Flowsint is an open-source OSINT graph exploration tool designed for cybersecurity investigation, transparency, and verification. Prior to 1.2.3, Flowsint allows a user to create investigations, which are used to manage sketches and analyses. Sketches have controllable graphs, which are comprised of nodes and relationships. The sketches contain information on an OSINT target (usernames, websites, etc) within these nodes and relationships. A remot

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-05-14
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: flowsint

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-14 16:16 UTCPublished CVE record published
2026-10-26 14:10 UTCUpdated Record last modified

flowsint flowsint UPGRADE

Affected: < 1.2.3

Fixed in: 1.2.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy flowsint || rpm -q flowsint || flowsint --version

2. UPGRADE to 1.2.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade flowsint

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade flowsint

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-42159?

flowsint: upgrade to 1.2.3. Exact commands for each OS are on this page.

Is CVE-2026-42159 being exploited?

CVE-2026-42159 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-42159 affect?

CVE-2026-42159 affects flowsint. Severity is medium (CVSS 5.4). Flowsint is an open-source OSINT graph exploration tool designed for cybersecurity investigation, transparency, and verification. Prior to 1.2.3, Flowsint allows a user to create investigations, which are used to manage sketches and analyse

How urgent is CVE-2026-42159?

Priority 26/100. Public exploit reference

Related CVEs

CVE-2026-32311 CRITICAL 9.8 MITIGATE Flowsint is an open-source OSINT graph exploration tool designed for cybersecurity investigation, transparency

References

← Back to latest CVEs