CallBackery for Perl writes world-readable database dump to /tmp
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-59 and the CVSS impact.
Summary
CallBackery for Perl before 0.62.0 is affected. When taking a configuration backup, the code leaves a dump of the configuration database in /tmp, created with the process umask, and follows a symlink planted at its predictable name. A local user with low privileges can read the dump after any backup, including every user's password hash and saved form values, or redirect it to a file of their choosing.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
CallBackery versions before 0.62.0 for Perl leave a world-readable dump of the configuration database in /tmp when taking a configuration backup. getConfigBlob() has the sqlite3 shell write the dump to /tmp/cbdump<pid> and never removes it. The file takes the process umask, and a symlink planted at that predictable name is followed. The dump holds every user's password hash and every value saved by the application's forms. A local user can read these after any backup, and may redirect the dump to a file of their choosing.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | CallBackery | before 0.62.0 | 0.62.0 | Patch available | CNA |
- CallBackery Vendor— Affected before 0.62.0 Fixed in 0.62.0 Patch available CNA
Remediation
Upgrade CallBackery for Perl to version 0.62.0.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA CallBackery Fixed in 0.62.0
Timeline
- 2026-10-30 Threatist record created from CVE-2026-118990
- 2026-10-30 Alias added: GHSA-xc26-6hhc-42vj
- 2026-11-06 CVSS score added · CISA ADP
- 2026-11-06 CISA SSVC decision points changed
References
Sources
- CVE-2026-118990 · CVE Program
- CVE-2026-118990 · NVD
- FIRST EPSS
- GHSA-xc26-6hhc-42vj · GitHub Advisory Database · CC BY 4.0
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