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CVE-2021-26119

Public exploit available. Not confirmed exploited in the wild yet. Fixed in 3.1.39.

CVSS 3.17.5HighEPSS percentile95th8.5% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
Public exploit: 1 sourceFix3.1.39Upgrade to this build

Published Updated Sources: CVE.org, NVD, GitHub, BDU

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Packagist smarty/smartyAffected: < 3.1.39Upgrade to: 3.1.39Stated by: GitHub advisory
  • SmartyAffected: < 3.1.39Upgrade to: 3.1.39Stated by: NVD
  • Сообщество свободного программного обеспечения Debian GNU/LinuxAffected: 9Upgrade to: not statedStated by: BDU
  • Canonical Ltd. UbuntuAffected: 18.04 LTSUpgrade to: not statedStated by: BDU
  • New Digital Group, Inc. SmartyAffected: до 3.1.39Upgrade to: not statedStated by: BDU

Versions as the sources state them. Full version matrix after sign-in

Check it yourselfA free Nuclei and OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Discuss checks for your systems with a specialist. Scope is agreed before testing.

What it is

From the CVE record

Smarty before 3.1.39 allows a Sandbox Escape because $smarty.template_object can be accessed in sandbox mode.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS95th
Public exploit
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

1 source with a proof of concept or module.

Exploit links, PoCs and Metasploit modules after sign-in
EPSS

8.5% chance of exploitation activity in the next 30 days, which ranks it in the 95th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

The patch came 471 days before any public exploit.

  1. OpenVAS check added
  2. EPSS band changehigh → low
  3. Public exploit / PoCsource: github-pocnuclei check added
  4. Patch availablerecord updated
  5. Publishedweakness classified

Affected products

And 1 more affected product. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Scored 7.5 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality NoneNo confidentiality impact
  • Integrity HighTotal loss of integrity — attacker can modify any data in the component
  • Availability NoneNo availability impact

Weaknesses

Sources

References in the record

And 10 more references. See all after sign-in

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We'll flag the next CVE, public exploit or patch for Smarty, not every advisory. This one: public exploit.