CVE-2026-58198

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 98% of all CVEs by exploit prediction. 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: epss, secondary
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

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

ChatterBot is a machine learning, conversational dialog engine for creating chat bots. Prior to 1.2.14, UbuntuCorpusTrainer.extract() uses a predictable home-rooted output directory (~/ubuntu_data/ubuntu_dialogs) with a check-then-create pattern followed by tar.extractall(path=self.data_path), allowing a local attacker who pre-plants a symlink at the predictable path to cause archive contents to be written through the symlink to an attacker-chosen directory. This issue is fixed in version 1.2.14.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

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 computed
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 9, 2026

Advisory Details (4)

Auto-updated Jul 9, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available🟡 PoC Available

Symlink-Following Arbitrary Write via UbuntuCorpusTrainer in ChatterBot · Advisory · gunthercox/ChatterBot · GitHub

https://github.com/gunthercox/ChatterBot/security/advisories/GHSA-wvrh-2f4m-924v
github_release Patch Available

1.2.14

Patch available: gunthercox/ChatterBot 1.2.14

https://github.com/gunthercox/ChatterBot/releases/tag/1.2.14
github_pr Patch Available

Guard against symlinks in training data paths

Patch available: gunthercox/ChatterBot 1.2.14 (PR #2445 merged 2026-06-19)

https://github.com/gunthercox/ChatterBot/pull/2445
github_commit Patch Available

commit 82817b5c28bf (gunthercox/ChatterBot)

Patch available: gunthercox/ChatterBot 1.2.14 (contains commit 82817b5c28bf)

https://github.com/gunthercox/ChatterBot/commit/82817b5c28bfd43e682b991bcc76e6f780726dbf

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
chatterbot0.0.0 ... 1.2.9 (94 versions)1.2.14—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 42× 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. 2026-08-30 06:44 UTCEG score recompute
  2. 2026-08-30 01:22 UTCEPSS rescore
  3. 2026-08-28 21:42 UTCEPSS rescore
  4. 2026-08-28 02:41 UTCEG score recompute
  5. 2026-08-27 14:25 UTCEPSS rescore
  6. 2026-08-26 03:49 UTCEG score recompute
  7. 2026-08-25 13:49 UTCEPSS rescore
  8. 2026-08-24 21:44 UTCEG score recompute
  9. 2026-08-23 22:32 UTCEG score recompute
  10. 2026-08-23 00:19 UTCEPSS rescore
  11. 2026-08-22 00:07 UTCEG score recompute
  12. 2026-08-21 23:49 UTCEPSS rescore
  13. 2026-08-21 00:54 UTCEG score recompute
  14. 2026-08-20 22:55 UTCEPSS rescore
  15. 2026-08-18 22:26 UTCEG score recompute
  16. 2026-08-18 13:48 UTCEPSS rescore
  17. 2026-08-17 22:16 UTCEG score recompute
  18. 2026-08-17 13:47 UTCEPSS rescore
  19. 2026-08-16 21:58 UTCEG score recompute
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 02:14 UTCEPSS rescore
  22. 2026-08-15 22:46 UTCEG score recompute
  23. 2026-08-15 01:30 UTCEPSS rescore
  24. 2026-08-14 00:22 UTCEG score recompute
  25. 2026-08-13 22:00 UTCEPSS rescore
Show 52 more
  1. 2026-08-13 01:10 UTCEG score recompute
  2. 2026-08-12 13:51 UTCEPSS rescore
  3. 2026-08-12 01:58 UTCEG score recompute
  4. 2026-08-09 04:21 UTCEG score recompute
  5. 2026-08-08 16:37 UTCEPSS rescore
  6. 2026-08-08 05:09 UTCEG score recompute
  7. 2026-08-07 05:57 UTCEG score recompute
  8. 2026-08-06 13:47 UTCEPSS rescore
  9. 2026-08-06 06:45 UTCEG score recompute
  10. 2026-08-05 19:17 UTCEPSS rescore
  11. 2026-08-05 07:33 UTCEG score recompute
  12. 2026-08-04 15:10 UTCEPSS rescore
  13. 2026-08-04 08:17 UTCEG score recompute
  14. 2026-08-03 10:36 UTCEPSS rescore
  15. 2026-08-01 09:14 UTCEG score recompute
  16. 2026-08-01 04:16 UTCEPSS rescore
  17. 2026-07-31 10:02 UTCEG score recompute
  18. 2026-07-30 16:28 UTCEPSS rescore
  19. 2026-07-30 10:47 UTCEG score recompute
  20. 2026-07-30 01:30 UTCEPSS rescore
  21. 2026-07-30 01:30 UTCEPSS rescore
  22. 2026-07-29 11:33 UTCEG score recompute
  23. 2026-07-28 15:37 UTCEPSS rescore
  24. 2026-07-28 12:18 UTCEG score recompute
  25. 2026-07-27 14:14 UTCEPSS rescore
  26. 2026-07-27 11:33 UTCEG score recompute
  27. 2026-07-26 14:54 UTCEPSS rescore
  28. 2026-07-26 14:54 UTCEPSS rescore
  29. 2026-07-26 12:18 UTCEG score recompute
  30. 2026-07-24 14:18 UTCEPSS rescore
  31. 2026-07-24 14:18 UTCEPSS rescore
  32. 2026-07-23 14:18 UTCEPSS rescore
  33. 2026-07-23 14:18 UTCEPSS rescore
  34. 2026-07-23 03:20 UTCEG score recompute
  35. 2026-07-22 14:08 UTCEPSS rescore
  36. 2026-07-22 14:08 UTCEPSS rescore
  37. 2026-07-21 15:25 UTCEPSS rescore
  38. 2026-07-21 15:25 UTCEPSS rescore
  39. 2026-07-20 17:08 UTCEPSS rescore
  40. 2026-07-19 02:29 UTCEPSS rescore
  41. 2026-07-18 10:04 UTCEPSS rescore
  42. 2026-07-16 17:03 UTCEPSS rescore
  43. 2026-07-15 16:57 UTCEPSS rescore
  44. 2026-07-15 16:57 UTCEPSS rescore
  45. 2026-07-13 22:31 UTCEPSS rescore
  46. 2026-07-13 06:13 UTCEPSS rescore
  47. 2026-07-13 06:13 UTCEPSS rescore
  48. 2026-07-12 05:46 UTCEPSS rescore
  49. 2026-07-11 08:27 UTCEPSS rescore
  50. 2026-07-11 08:27 UTCEPSS rescore
  51. 2026-07-09 18:35 UTCEG score recompute
  52. 2026-07-09 18:35 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-58198?
CVE-2026-58198 is a medium vulnerability published on July 9, 2026. ChatterBot is a machine learning, conversational dialog engine for creating chat bots. Prior to 1.2.14, UbuntuCorpusTrainer.extract() uses a predictable home-rooted output directory (~/ubuntudata/ubuntudialogs) with a check-then-create pattern followed by tar.extractall(path=self.data_path),…
When was CVE-2026-58198 disclosed?
CVE-2026-58198 was first published in the National Vulnerability Database on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58198 actively exploited?
CVE-2026-58198 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 97.6% of all scored CVEs.
What is the CVSS score of CVE-2026-58198?
CVE-2026-58198 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-58198?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58198, 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-58198

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