Little Birdies: Unsafe object deserialization
An unauthenticated attacker can supply untrusted serialized input that is converted into application objects. The export identifies object injection but does not disclose the deserialization function, input format or a usable gadget chain; code execution is not independently established by this sparse record. The endpoint, action and parameter are not disclosed. The CNA vector records high confidentiality impact, high integrity impact, high availability impact. Affected versions: at most 1.3.16.
- Component
- Little Birdies
- Plugin slug
little-birdies- Affected
- <= 1.3.16
- Safe version
1.3.20- Published
- Oct 23, 2026
This CVE was published Oct 23, 2026 and is one of 2 known issues for this theme.
Update, patch or deactivate.
The official author notes confirm remediation in 1.3.20. This is a confirmed fixed-by release, not proof of the earliest historical fix; the published affected range is not extended to intervening releases. Update to the applicable fixed release or a later supported release. Official notes: https://themeforest.net/item/little-birdies-multipurpose-children-wp-theme/19757699. Avoid deserializing client-controlled objects; use a data-only format and an allowlist of accepted types. Remove unsafe object construction at the affected trust boundary.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
Deserialization of Untrusted Data vulnerability in ThemeREX Group Little Birdies little-birdies allows Object Injection.This issue affects Little Birdies: from n/a through 1.3.16.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H