Langflow vulnerabilities in CISA KEV
Langflow has 5 vulnerabilities in CISA's catalogue of flaws known to be exploited, the 48th highest of any vendor. 4 were added in the last 12 months; 1 is linked to known ransomware use (20% of its entries, against 20.4% across the catalogue). CISA's median fix window for these entries is 14 days (range 3 to 21), against 21 days (range 1 to 184) across the whole catalogue. The most exploited product is Langflow, with 5 entries.
Catalog v2026.11.04, released 5 Nov 2026. Source CISA ↗. All KEV entries.
$ ./kev --vendor langflow --summary
Counts are computed from the catalog release on ; the 12 month window ends there.
┌─ total entries
5
in CISA KEV
┌─ first added
2025-05-05
earliest entry
┌─ latest added
2026-07-21
most recent entry
┌─ last 12 months
4
entries added
┌─ ransomware use
1 of 5
20% linked to ransomware
┌─ distinct products
1
affected products
$ awk -F, {print $1} /var/log/kev/langflow.log | uniq -c
Entries by the year CISA added them.
| Year | Entries added | Of which ransomware |
|---|---|---|
| 2025 | 1 | 1 |
| 2026 | 4 | 0 |
$ sort /var/log/kev/langflow.log | uniq -c | sort -rn | head -5
The five products with the most entries in the catalogue.
- Langflow 5 entries
$ kev-due-dates --vendor langflow
Days between the date CISA added an entry and the due date it set, median and range. Due dates apply to US federal agencies; for everyone else they are a patch-first ranking signal.
┌─ Langflow
14 days (range 3 to 21)
median and range in days
┌─ whole catalogue
21 days (range 1 to 184)
median and range in days
$ grep -o 'CWE-[0-9]*' /var/log/kev/langflow.log | sort | uniq -c | sort -rn | head -3
Weakness types CISA records for these entries (5 of 5 have at least one CWE).
$ grep -ril 'Langflow' /var/log/news | head -5
Our reporting that names Langflow or one of its KEV CVE ids, newest first.
┌─ /var/log/news
Patch Week pages with these entries
No Patch Week page covers this vendor yet.
$ wc -l ./langflow.kev · 5 rows
Descriptions: CISA Known Exploited Vulnerabilities catalogue
- CVE-2026-0770
Langflow
Langflow Inclusion of Functionality from Untrusted Control Sphere Vulnerability
due 2026-07-24 · CWE-829
$ cat CVE-2026-0770.txt
Description. Langflow contains an inclusion of functionality from untrusted control sphere vulnerability that allows remote attackers to execute arbitrary code on affected installations.
Required action. Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
- CVE-2026-55255
Langflow
Langflow Authorization Bypass Through User-Controlled Key Vulnerability
due 2026-07-10 · CWE-639
$ cat CVE-2026-55255.txt
Description. Langflow contains an authorization bypass through user-controlled key vulnerability which allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request.
Required action. Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
- CVE-2025-34291
Langflow
Langflow Origin Validation Error Vulnerability
due 2026-06-04 · CWE-346
$ cat CVE-2025-34291.txt
Description. Langflow contains an origin validation error vulnerability in which an overly permissive CORS configuration combined with a refresh token cookie configured as SameSite=None allows a malicious webpage to perform cross-origin requests that include credentials and successfully call the refresh endpoint. This could allow the attacker to execute arbitrary code and achieve full system compromise via obtained tokens that permit access to authenticated endpoints.
Required action. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CVE-2026-33017
Langflow
Langflow Code Injection Vulnerability
due 2026-04-08 · CWE-94 CWE-95 CWE-306
$ cat CVE-2026-33017.txt
Description. Langflow contains a code injection vulnerability that could allow building public flows without requiring authentication.
Required action. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CVE-2025-3248
Langflow [RANSOMWARE]
Langflow Missing Authentication Vulnerability
due 2025-05-26 · CWE-306
$ cat CVE-2025-3248.txt
Description. Langflow contains a missing authentication vulnerability in the /api/v1/validate/code endpoint that allows a remote, unauthenticated attacker to execute arbitrary code via crafted HTTP requests.
Required action. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.