CVE-2026-1691

bolo-solo SnakeYAML BackupService.java importMarkdownsSync deserialization

State: Published
Severity: 5.3 Medium
Published: Jan 30, 2026
Updated: Feb 23, 2026
Reserved: Jan 30, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	6.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C	VulDB
3.0	6.3 Medium	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C	VulDB
2.0	6.5 Medium	AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:C	VulDB

Weaknesses

CWE-502 Deserialization
CWE-20 Improper Input Validation

Affected Products

Product	Versions
bolo-solon/a	2.6.0Affected 2.6.1Affected 2.6.2Affected 2.6.3Affected 2.6.4Affected

References

VDB-343485 | bolo-solo SnakeYAML BackupService.java importMarkdownsSync deserializationvdb-entrytechnical-description
VDB-343485 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #741899 | bolo-solo V2.6.4 SnakeYAML deserialization vulnerabilitythird-party-advisory
https://github.com/bolo-blog/bolo-solo/issues/325issue-tracking
https://github.com/bolo-blog/bolo-solo/issues/325#issue-3828755519exploitissue-tracking

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