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Unauthenticated PHP object injection in the AxiomThemes 'Original' WordPress theme (all versions up to and including 1.9.0) lets a remote attacker reach a code path that passes attacker-controlled input into PHP's unserialize(), exposing affected sites to high impact across confidentiality, integrity, and availability (CVSS 3.1 base 9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). Because the root cause is CWE-502, the practical ceiling of exploitation depends on whether a usable POP gadget chain exists in the theme, WordPress core, or a co-installed plugin - without one, outcomes may be limited to lower-impact effects rather than full code execution. No public exploit code has been identified at time of analysis, there is no CISA KEV entry indicating confirmed active exploitation, and no EPSS score was supplied with the source data, so this should be treated as a severe latent exposure rather than a confirmed campaign.
Unauthenticated PHP object injection in the AxiomThemes 'Original' WordPress theme (all versions up to and including 1.9.0) lets a remote attacker reach a code path that passes attacker-controlled input into PHP's unserialize(), exposing affected sites to high impact across confidentiality, integrity, and availability (CVSS 3.1 base 9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). Because the root cause is CWE-502, the practical ceiling of exploitation depends on whether a usable POP gadget chain exists in the theme, WordPress core, or a co-installed plugin - without one, outcomes may be limited to lower-impact effects rather than full code execution. No public exploit code has been identified at time of analysis, there is no CISA KEV entry indicating confirmed active exploitation, and no EPSS score was supplied with the source data, so this should be treated as a severe latent exposure rather than a confirmed campaign.