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.
CVE-2026-58198
MEDIUMPre-NVD 5.55.5—Trending — 3 sources updated this week
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 99% 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
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.5
- EG Score
- 5.5(medium)
- EPSS
- 0.8%
- 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-924vgithub_release Patch Available
1.2.14
Patch available: gunthercox/ChatterBot 1.2.14
https://github.com/gunthercox/ChatterBot/releases/tag/1.2.14github_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/2445github_commit Patch Available
commit 82817b5c28bf (gunthercox/ChatterBot)
Patch available: gunthercox/ChatterBot 1.2.14 (contains commit 82817b5c28bf)
https://github.com/gunthercox/ChatterBot/commit/82817b5c28bfd43e682b991bcc76e6f780726dbfAffected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| chatterbot | 0.0.0 ... 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 7× in last 7d / 7× 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.
- 2026-07-12 05:46 UTCEPSS rescore
- 2026-07-11 16:59 UTCEG score recompute
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-10 17:47 UTCEG score recompute
- 2026-07-09 18:35 UTCEG score recompute
- 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 0.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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
Is Your Infrastructure Affected by CVE-2026-58198?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.