UpdraftPlus: WP Backup & Migration Plugin

{
    "slug": "updraftplus",
    "finding_count": 9,
    "findings": [
        {
            "pattern": "Upgrade",
            "kind": "ioc:changelog_phrase",
            "file": "readme.txt",
            "line": 220,
            "snippet": "* TWEAK: Upgrade the common-libs tag version",
            "confidence": "low"
        },
        {
            "pattern": "Upgrade",
            "kind": "ioc:changelog_phrase",
            "file": "readme.txt",
            "line": 565,
            "snippet": "* TWEAK: Attempt to workaround some web hosts' opcode cache producing incorrect error upon upgrade",
            "confidence": "low"
        },
        {
            "pattern": "Upgrade",
            "kind": "ioc:changelog_phrase",
            "file": "readme.txt",
            "line": 660,
            "snippet": "* TWEAK: Add admin notice to inform the user to upgrade their PHP to version 5.3 or higher due to changes in phpseclib requirements in future releases",
            "confidence": "low"
        },
        {
            "pattern": "Upgrade",
            "kind": "ioc:changelog_phrase",
            "file": "readme.txt",
            "line": 870,
            "snippet": "* REFACTOR: Upgrade AWS SDK from version 2.8 to 3",
            "confidence": "low"
        },
        {
            "pattern": "Upgrade",
            "kind": "ioc:changelog_phrase",
            "file": "readme.txt",
            "line": 983,
            "snippet": "* TWEAK: Update shop links and upgrade prompts",
            "confidence": "low"
        },
        {
            "pattern": "Upgrade",
            "kind": "ioc:changelog_phrase",
            "file": "readme.txt",
            "line": 1242,
            "snippet": "* TWEAK: Suppress message about how to upgrade an already-installed plugin when on WP 5.5+ (where it is no longer relevant)",
            "confidence": "low"
        },
        {
            "pattern": "Upgrade",
            "kind": "ioc:changelog_phrase",
            "file": "readme.txt",
            "line": 1475,
            "snippet": "* TWEAK: Upgraded the 'site-to-site' remote sending code to use the more recent UDRPC message format",
            "confidence": "low"
        },
        {
            "pattern": "Upgrade",
            "kind": "ioc:changelog_phrase",
            "file": "readme.txt",
            "line": 1849,
            "snippet": "* TWEAK: Add a sanity check to prevent some PHP debug notices being logged in an upgrade situation",
            "confidence": "low"
        },
        {
            "pattern": "Upgrade",
            "kind": "ioc:changelog_phrase",
            "file": "readme.txt",
            "line": 2151,
            "snippet": "== Upgrade Notice ==",
            "confidence": "low"
        }
    ],
    "triage_note_2026_05_03": "updraftplus: 9 Upgrade hits, all readme.txt changelog mentions of normal upgrade events. UpdraftPlus is a well-known backup plugin."
}

{
    "slug": "updraftplus",
    "pattern": "unserialize_after_remote_call",
    "kind": "builtin",
    "version": "1.26.3",
    "hit_count": 1,
    "first_hit": {
        "file": "backup.php",
        "line": 3604,
        "snippet": "L3604: $var = $updraftplus->unserialize(file_get_contents($cache_file_base.'-info.tmp'));  \u2192  L3604: $var = $updraftplus->unserialize(file_get_contents($cache_file_base.'-info.tmp'));"
    },
    "explanation": "a remote HTTP fetch (`wp_remote_*`/`curl_exec`) is followed by `unserialize`/`maybe_unserialize` within the same file \u2014 classic PHP Object Injection C2 gadget used by EP and most WP supply-chain backdoors. Legit plugins essentially never do this."
}

{
    "slug": "updraftplus",
    "previous_version": "1.26.3",
    "current_version": "1.26.3",
    "new_findings": [
        {
            "pattern": "unserialize_after_remote_call",
            "kind": "builtin",
            "file": "backup.php",
            "line": 3604,
            "snippet": "L3604: $var = $updraftplus->unserialize(file_get_contents($cache_file_base.'-info.tmp'));  \u2192  L3604: $var = $updraftplus->unserialize(file_get_contents($cache_file_base.'-info.tmp'));",
            "confidence": "high"
        }
    ],
    "new_finding_count": 1
}

{
    "slug": "updraftplus",
    "domain": "ipvigilante.com",
    "domain_source": "c2_http_call",
    "domain_registered_at": "2025-03-22",
    "plugin_earliest_commit": "2015-01-01 16:08:48",
    "plugin_latest_release": "2026-04-23 16:51:10",
    "gap_days": 3732,
    "domain_age_at_release": 397,
    "active_installs": 3000000
}