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TI-2026-70545 Aliases CVE-2026-108546GHSA-3cfw-8vg9-xhxx

OS command injection in Spotweb lets remote attackers run commands

Priority HIGH 69CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
High
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

Spotweb through 1.5.8 contains an OS command injection flaw (CWE-78) in the runcommand NZB handler. Remote attackers can post spots over Usenet with shell metacharacters in the title, which the handler substitutes unescaped and passes to exec() when a user downloads the spot. Successful attacks run commands as the Spotweb PHP process, and a public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

Spotweb through 1.5.8 contains an OS command injection vulnerability in the runcommand NZB handler that allows remote attackers to execute commands by publishing spots with malicious titles. Attackers can post self-signed spots over Usenet with shell metacharacters in the title, which are substituted unescaped for $SPOTTITLE and passed to exec() when a user downloads the spot, running commands as the Spotweb PHP process.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00803 56th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
spotwebspotwebup to 1.5.8—No fix listedCNA
  • spotweb Vendorspotweb Affected up to 1.5.8 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Spotweb.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-11 Threatist record created from CVE-2026-108546
  2. 2026-10-11 Alias added: GHSA-3cfw-8vg9-xhxx
  3. 2026-10-11 Priority changed: MEDIUM → LOW
  4. 2026-10-13 CISA SSVC decision points changed
  5. 2026-10-13 Priority changed: LOW → HIGH
  6. 2026-11-06 Affected versions changed · Red Hat
  7. 2026-11-06 CVSS score added · Red Hat

References

Exploit 1

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences