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TI-2026-01374 Aliases CVE-2026-1691GHSA-g4hj-43hm-xfc7

bolo-solo SnakeYAML BackupService.java importMarkdownsSync deserialization

Priority MEDIUM 57CWE-20Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

A vulnerability has been found in bolo-solo up to 2.6.4. This impacts the function importMarkdownsSync of the file src/main/java/org/b3log/solo/bolo/prop/BackupService.java of the component SnakeYAML. Such manipulation leads to deserialization. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00565 47th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and 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
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—bolo-solo2.6.0; 2.6.1; 2.6.2; 2.6.3; 2.6.4—No fix listedCNA
  • bolo-solo Vendor— Affected 2.6.0; 2.6.1; 2.6.2; 2.6.3; 2.6.4 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:adlered:bolo-solo:*:*:*:*:*:*:*:*up to 2.6.4Vulnerablebolo-blog
  • cpe:2.3:a:adlered:bolo-solo:*:*:*:*:*:*:*:* Versions up to 2.6.4 Vulnerable ·bolo-blog

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-1691
  2. 2026-10-03 Alias added: GHSA-g4hj-43hm-xfc7

References

Exploit 2

  • TI-2023-21647 File Upload vulnerability in adlered bolo-solo v.2.6 allows a remote attacker to execute… CVSS 3.1CRITICAL 9.8
  • TI-2026-01491 bolo-blog bolo-solo FreeMarker Template PicUploadProcessor.java unrestricted upload CVSS 4.0MEDIUM 5.3
  • TI-2026-01490 bolo-blog bolo-solo Filename BackupService.java importFromCnblogs path traversal CVSS 4.0MEDIUM 5.3
  • TI-2026-01489 bolo-blog bolo-solo Filename BackupService.java importFromMarkdown path traversal CVSS 4.0MEDIUM 5.3
  • TI-2026-01488 bolo-blog bolo-solo ZIP File BackupService.java unpackFilteredZip path traversal CVSS 4.0MEDIUM 5.3

Sources

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