How severe is CVE-2026-1691?

CVE-2026-1691 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-1691 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1691?

CVE-2026-1691 affects Adlered Bolo-solo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-1691?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-1691 have an EU (EUVD) identifier?

Yes. CVE-2026-1691 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5013.

When was CVE-2026-1691 published?

CVE-2026-1691 was published on 2026-01-30 and last updated on 2026-06-17.

CVE-2026-1691

CVE-2026-1691 is a medium-severity vulnerability in Adlered Bolo-solo with a CVSS 3.x base score of 6.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5013
Weakness: CWE-502
Affected product: Adlered Bolo-solo
Published: 2026-01-30
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-1691?: 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.
How severe is CVE-2026-1691?: CVE-2026-1691 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-1691 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1691?: CVE-2026-1691 affects Adlered Bolo-solo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-1691?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-1691 have an EU (EUVD) identifier?: Yes. CVE-2026-1691 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5013.
When was CVE-2026-1691 published?: CVE-2026-1691 was published on 2026-01-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:adlered:bolo-solo:*:*:*:*:*:*:*:*

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