CVE-2026-7847

LOWNVD 2.62.6—
EchelonGraph scoreMEDIUM confidence

Score 2.6 from GitHub Security Advisory (severity: LOW) published 2026-05-05. NVD baseline CVSS 2.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
2.6
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 2.6Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A vulnerability was found in chatchat-space Langchain-Chatchat up to 0.3.1.3. The affected element is the function _get_file_id of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component Uploaded File Handler. Performing a manipulation results in insufficiently random values. Access to the local network is required for this attack. The attack's complexity is rated as high. The exploitability is described as difficult. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS v3
2.6
EG Score
2.6(medium)
EPSS
14.3%
KEV
Not listed

Published

May 5, 2026

Last Modified

May 5, 2026

References (6)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
piplangchain-chatchat—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
langchain-chatchat0.3.0 ... 0.3.1.3 (22 versions)——

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 34× 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.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-13 22:31 UTCEPSS rescore
  4. 2026-07-13 06:13 UTCEPSS rescore
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-11 08:27 UTCEPSS rescore
  7. 2026-07-09 19:10 UTCEPSS rescore
  8. 2026-07-09 19:10 UTCEPSS rescore
  9. 2026-07-08 15:16 UTCEPSS rescore
  10. 2026-07-08 15:16 UTCEPSS rescore
  11. 2026-07-07 13:46 UTCEPSS rescore
  12. 2026-07-07 13:46 UTCEPSS rescore
  13. 2026-07-06 16:27 UTCEPSS rescore
  14. 2026-07-06 16:27 UTCEPSS rescore
  15. 2026-07-06 02:23 UTCEPSS rescore
  16. 2026-07-06 02:23 UTCEPSS rescore
  17. 2026-07-05 02:31 UTCEPSS rescore
  18. 2026-07-05 02:30 UTCEPSS rescore
  19. 2026-07-01 15:07 UTCEPSS rescore
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-29 14:06 UTCEPSS rescore
  22. 2026-06-28 14:07 UTCEPSS rescore
  23. 2026-06-28 04:56 UTCEPSS rescore
  24. 2026-06-27 03:08 UTCEPSS rescore
  25. 2026-06-25 13:50 UTCEPSS rescore
Show 49 more
  1. 2026-06-24 14:05 UTCEPSS rescore
  2. 2026-06-23 21:33 UTCEPSS rescore
  3. 2026-06-22 14:25 UTCEPSS rescore
  4. 2026-06-21 14:56 UTCEPSS rescore
  5. 2026-06-21 01:59 UTCEPSS rescore
  6. 2026-06-19 19:26 UTCEPSS rescore
  7. 2026-06-18 17:52 UTCEPSS rescore
  8. 2026-06-17 17:53 UTCEPSS rescore
  9. 2026-06-16 17:53 UTCEPSS rescore
  10. 2026-06-15 17:49 UTCEPSS rescore
  11. 2026-06-15 17:49 UTCEPSS rescore
  12. 2026-06-14 23:18 UTCEPSS rescore
  13. 2026-06-14 07:50 UTCEG score recompute
  14. 2026-06-14 07:50 UTCGHSA enrichment
  15. 2026-06-13 23:00 UTCEPSS rescore
  16. 2026-06-12 23:12 UTCEPSS rescore
  17. 2026-06-12 23:12 UTCEPSS rescore
  18. 2026-06-11 14:00 UTCEPSS rescore
  19. 2026-06-10 22:19 UTCEPSS rescore
  20. 2026-06-10 13:22 UTCEPSS rescore
  21. 2026-06-10 05:03 UTCEG score recompute
  22. 2026-06-10 05:03 UTCGHSA enrichment
  23. 2026-06-08 14:17 UTCEPSS rescore
  24. 2026-06-07 15:25 UTCEPSS rescore
  25. 2026-06-07 06:43 UTCEG score recompute
  26. 2026-06-07 06:43 UTCGHSA enrichment
  27. 2026-06-06 13:47 UTCEPSS rescore
  28. 2026-06-05 22:47 UTCEPSS rescore
  29. 2026-06-05 06:10 UTCEPSS rescore
  30. 2026-06-04 13:12 UTCEPSS rescore
  31. 2026-06-04 08:23 UTCEG score recompute
  32. 2026-06-04 08:23 UTCGHSA enrichment
  33. 2026-06-02 20:13 UTCEPSS rescore
  34. 2026-06-01 13:52 UTCEPSS rescore
  35. 2026-06-01 09:48 UTCEG score recompute
  36. 2026-06-01 09:48 UTCGHSA enrichment
  37. 2026-05-31 22:30 UTCEPSS rescore
  38. 2026-05-31 00:16 UTCEPSS rescore
  39. 2026-05-29 13:44 UTCEPSS rescore
  40. 2026-05-28 13:44 UTCEPSS rescore
  41. 2026-05-27 13:40 UTCEPSS rescore
  42. 2026-05-27 13:40 UTCEPSS rescore
  43. 2026-05-26 13:44 UTCEPSS rescore
  44. 2026-05-26 07:18 UTCEPSS rescore
  45. 2026-05-21 22:43 UTCEPSS rescore
  46. 2026-05-20 22:38 UTCEPSS rescore
  47. 2026-05-20 14:26 UTCEG score recompute
  48. 2026-05-20 14:26 UTCGHSA enrichment
  49. 2026-05-20 11:22 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-7847?
CVE-2026-7847 is a low vulnerability published on May 5, 2026. A vulnerability was found in chatchat-space Langchain-Chatchat up to 0.3.1.3. The affected element is the function getfileid of the file libs/chatchat-server/chatchat/server/apiserver/openai_routes.py of the component Uploaded File Handler. Performing a manipulation results in insufficiently random…
When was CVE-2026-7847 disclosed?
CVE-2026-7847 was first published in the National Vulnerability Database on May 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-7847 actively exploited?
CVE-2026-7847 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-7847?
CVE-2026-7847 has a CVSS v3 base score of 2.6 (NVD).
How do I remediate CVE-2026-7847?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-7847, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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