CVE-2024-9277 json
Langflow HTTP POST Request utils.py redos
published 2024-09-27 2 y ago modified 2026-07-07 4 mo ago also GHSA-355v-2rjx-fpx7 , PYSEC-2026-1521 , EUVD-2024-2701
- cvss
- 3.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
A vulnerability classified as problematic was found in Langflow up to 1.0.18. Affected by this vulnerability is an unknown functionality of the file \src\backend\base\langflow\interface\utils.py of the component HTTP POST Request Handler. The manipulation of the argument remaining_text leads to inefficient regular expression complexity. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- rumbling-slice-eb0.notion.site https://rumbling-slice-eb0.notion.site/Remote-Redos-in-https-github-com-langflow-ai-langflow-067159ced0d5494e91b06071384969c4?pvs=4 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.1 | CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| CNA | 3.1 | 3.5 | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| CNA | 3.0 | 3.5 | CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| CNA | 2.0 | 2.3 | AV:A/AC:M/Au:S/C:N/I:N/A:P |
| CNA | 4.0 | 5.1 | CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 3.5 | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| OSV | 3.1 | 3.5 | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | langflow | <=1.0.18 |
no fix listed |
Affected products
- n/a Langflow
- langflow langflow
Classification
- Weakness
-
- CWE-1333 Inefficient Regular Expression Complexity
References
-
rumbling-slice-eb0.notion.site
/Remote-Redos-in-https-github-com-langflow-ai-langflow-067159ced0d5494e91b06071384969c4?pvs=4
exploit, web, third-party-advisory
-
vuldb.com
/?id.278659
vdb-entry, technical-description, web, third-party-advisory
-
vuldb.com
/?ctiid.278659
signature, permissions-required, web, vdb-entry
-
vuldb.com
/?submit.410043
third-party-advisory, web, vdb-entry
-
nvd.nist.gov
/vuln/detail/CVE-2024-9277
advisory
-
github.com
/langflow-ai/langflow
package
-
github.com
/langflow-ai/langflow/blob/main/src/backend/base/langflow/interface/utils.py#L65
web
-
pypi.org
/project/langflow
package
-
github.com
/advisories/GHSA-355v-2rjx-fpx7
advisory
Sources
- CVE List CVE-2024-9277
- GitHub Advisory GHSA-355v-2rjx-fpx7
- NVD CVE-2024-9277
- OSV PYSEC-2026-1521
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.