Directory traversal vulnerability in the extract_jar function in jartool.c in FastJar 0.98 allows remote attackers to create or overwrite arbitrary files via a .. (dot dot) in a non-initial pathname component in a filename within a .jar archive, a related issue to CVE-2005-1080. NOTE: this vulnerability exists because of an incomplete fix for CVE-2006-3619.
Conclusion & alert: CVE-2010-0831 is rated High Exploit Risk (71.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.68%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.46% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 1.22% | 3.68% | +2.46% |
| 2 | 2026-04-12 | 1.85% | 1.22% | -0.64% |
| 3 | 2025-07-31 | — | 1.85% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.8 | 2.0 | MEDIUM |
|
8.6 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
low | CVE-2010-0831 low priority: Debian including 1 source packages (fastjar), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2010-0831 |
gentoo
|
normal | CVE-2010-0831: 1 GLSA(s) (201209-21), 1 atom(s) (app-arch/fastjar); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2010-0831 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2010-0831 |
ubuntu
|
medium | CVE-2010-0831 medium priority: Ubuntu including 1 source packages (fastjar), 6 status rows across 6 suites (dapper, hardy, jaunty, karmic, lucid, upstream): released 4, DNE 1, needs-triage 1. | https://ubuntu.com/security/CVE-2010-0831 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| matthias_klose | fastjar | 0.98 | cpe:2.3:a:matthias_klose:fastjar:0.98:*:*:*:*:*:*:* |