To protect your stores from unauthorized entries, Adobe has released many security bulletins and security patches for Adobe Commerce and Magento Open Source.
Adobe has officially released APSB26-05, a critical security update for Adobe Commerce and Magento Open Source on 10th March, 2026.
This new security bulletin is designed specifically to protect against multiple vulnerabilities that could allow attackers to get around your security controls and gain escalated privileges. If left unpatched, an attacker may be able to bypass your controls and compromise your stores.
Let’s review what the key components of this APSB26-05 security bulletin are, which versions are impacted, what the risks might be, and what should be done by store owners going forward.
About APSB26-05 Security Update
The APSB26-05 security bulletin identifies several security vulnerabilities that could exist with either Adobe Commerce or Magento Open Source. These vulnerabilities are all classified as critical security vulnerabilities and could affect the security and integrity of your online store.
If exploited successfully, attackers could potentially:
- Bypass security mechanisms
- Gain escalated privileges
- Execute unauthorized malicious code
- Gain unauthorized access to store data
- Compromise customer accounts
Even though Adobe sometimes reports no active exploitation at the time of release, Adobe still recommends that you apply security patches as quickly as possible to avoid potential attacks.
Learn How to Apply Security Patches in Magento 2?
Affected Versions
Security bulletins typically affect multiple Magento versions across different release branches.
Affected versions include:
| Product | Version |
| Adobe Commerce | 2.4.9-alpha3 and earlier 2.4.8-p3 and earlier 2.4.7-p8 and earlier 2.4.6-p13 and earlier 2.4.5-p15 and earlier 2.4.4-p16 and earlier |
| Adobe Commerce B2B | 1.5.3-alpha3 and earlier 1.5.2-p3 and earlier 1.4.2-p8 and earlier 1.3.5-p13 and earlier 1.3.4-p15 and earlier 1.3.3-p16 and earlier |
| Magento Open Source | 2.4.9-alpha3 2.4.8-p3 and earlier 2.4.7-p8 and earlier 2.4.6-p13 and earlier 2.4.5-p15 and earlier |
If you are running an older version of Magento, it is highly recommended that you apply the APSB26-05 patch or upgrade your store to the latest secure version.
Solution
Adobe recommends users update their installation to the newest version.
| Product | Version |
| Adobe Commerce | 2.4.9‑beta1 for 2.4.9‑alpha3 2.4.8‑p4 for 2.4.8‑p3 and earlier 2.4.7‑p9 for 2.4.7‑p8 and earlier 2.4.6‑p14 for 2.4.6‑p13 and earlier 2.4.5‑p16 for 2.4.5‑p15 and earlier 2.4.4‑p17 for 2.4.4‑p16 and earlier |
| Adobe Commerce B2B | 1.5.3‑beta1 for 1.5.3‑alpha3 1.5.2‑p4 for 1.5.2‑p3 and earlier 1.4.2‑p9 for 1.4.2‑p8 and earlier 1.3.5‑p14 for 1.3.5‑p13 and earlier 1.3.4‑p16 for 1.3.4‑p15 and earlier 1.3.3‑p17 for 1.3.3‑p16 and earlier |
| Magento Open Source | 2.4.9‑beta1 for 2.4.9‑alpha3 2.4.8‑p4 for 2.4.8‑p3 and earlier 2.4.7‑p9 for 2.4.7‑p8 and earlier 2.4.6‑p14 for 2.4.6‑p13 and earlier 2.4.5‑p16 for 2.4.5‑p15 and earlier |
How MageComp Can Help?
Applying Magento Security patches can be a challenge for stores with many customizations or third-party extensions.
We’ve got a team of Magento experts at MageComp that can help you with:
- Applying the most up-to-date patch.
- Upgrading your store to the latest version in a safe manner.
- Resolving extension compatibility problems.
- Strengthening your Magento store’s security configuration.
- Fully auditing the security of your Magento store.
Having your store up to date helps provide better protection from new forms of cyber attacks.
Conclusion
The APSB26-05 Security Patch is an important patch for both Adobe Commerce and Magento Open Source. If you don’t stay up-to-date with security patches offered by Adobe, your store could be exposed to vulnerabilities that could lead to data loss or unauthorized access, and/or compromise your system.
Therefore, if you run a Magento store, you need to apply the APSB26-05 patch soon, review your system security, and ensure that you have applied all updates to your Magento extensions and/or all updates to your system dependencies. Being proactive with applying security updates will help protect your customers’ data, strive for business survivability, and protect your eCommerce reputation.
If you need assistance applying Magento security patches or upgrading your store, the MageComp team is always ready to help.
FAQ
1. What is APSB26-05 in Magento?
APSB26-05 is an urgent Adobe Security Bulletin that was issued to provide Adobe Commerce and Magento Open Source with an update aimed at improving the quality of security.
2. Why is the APSB26-05 update important?
This bulletin details vulnerabilities that could enable an attacker to bypass security measures, compromise the system, or otherwise use privileges gained through privilege escalation, code execution, or adversely manipulate data on an organization’s systems.
3. Which Magento versions are affected?
Multiple versions of Adobe Commerce and Magento Open Source, including several 2.4.x releases may be affected until the security patch is applied.
4. If I do not apply the security patch, what could happen?
Not applying the security patch can leave your retail business exposed to cyber attacks, data breaches, and potentially the takeover of your customers’ accounts.
5. Should I conduct testing of the security patch before introducing it into my production environment?
Yes, prior to putting a security patch into your production environment, it is strongly recommended that you perform testing of the patch in a staging environment to verify that it works without issues with any of your custom modules or extensions.
6. Can MageComp assist with the updates of Magento’s security patches?
Yes, MageComp offers installation of Magento security patches, upgrade services, security audits, and performance optimization to help protect your store against cybercrime.
