How severe is CVE-2026-33733?

CVE-2026-33733 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-33733 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33733?

CVE-2026-33733 affects Espocrm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33733?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-33733 have an EU (EUVD) identifier?

Yes. CVE-2026-33733 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25082.

When was CVE-2026-33733 published?

CVE-2026-33733 was published on 2026-04-22 and last updated on 2026-06-17.

CVE-2026-33733

CVE-2026-33733 is a high-severity vulnerability in Espocrm with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-23.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25082
Weakness: CWE-23
Affected product: Espocrm
Published: 2026-04-22
Last modified: 2026-06-17

Description

EspoCRM is an open source customer relationship management application. Prior to version 9.3.4, the admin template management endpoints accept attacker-controlled `name` and `scope` values and pass them into template path construction without normalization or traversal filtering. As a result, an authenticated admin can use `../` sequences to escape the intended template directory and read, create, overwrite, or delete arbitrary files that resolve to `body.tpl` or `subject.tpl` under the web application user's filesystem permissions. Version 9.3.4 fixes the issue.

Frequently asked questions

What is CVE-2026-33733?: EspoCRM is an open source customer relationship management application. Prior to version 9.3.4, the admin template management endpoints accept attacker-controlled `name` and `scope` values and pass them into template path construction without normalization or traversal filtering. As a result, an authenticated admin can use `../` sequences to escape the intended template directory and read, create, overwrite, or delete arbitrary files that resolve to `body.tpl` or `subject.tpl` under the web application user's filesystem permissions. Version 9.3.4 fixes the issue.
How severe is CVE-2026-33733?: CVE-2026-33733 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-33733 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33733?: CVE-2026-33733 affects Espocrm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33733?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-33733 have an EU (EUVD) identifier?: Yes. CVE-2026-33733 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25082.
When was CVE-2026-33733 published?: CVE-2026-33733 was published on 2026-04-22 and last updated on 2026-06-17.

References

https://github.com/espocrm/espocrm/security/advisories/GHSA-44c3-xjfp-3jrh

Affected products (1)

cpe:2.3:a:espocrm:espocrm:*:*:*:*:*:*:*:*

More vulnerabilities in Espocrm

CVE-2014-7985 — Critical (CVSS 10.0): Directory traversal vulnerability in EspoCRM before 2.6.0 allows remote attackers to include and execute arbitrary…
CVE-2020-37094 — Critical (CVSS 9.8): EspoCRM 5.8.5 contains an authentication vulnerability that allows attackers to access other user accounts by…
CVE-2026-33656 — Critical (CVSS 9.1): EspoCRM is an open source customer relationship management application. Prior to version 9.3.4, EspoCRM's built-in…
CVE-2022-38843 — High (CVSS 8.8): EspoCRM version 7.1.8 is vulnerable to Unrestricted File Upload allowing attackers to upload malicious file with any…
CVE-2019-14351 — High (CVSS 8.8): EspoCRM 5.6.4 is vulnerable to user password hash enumeration. A malicious authenticated attacker can brute-force a…
CVE-2025-32390 — High (CVSS 8.5): EspoCRM is a free, open-source customer relationship management platform. Prior to version 9.0.8, HTML Injection in…

All CVEs affecting Espocrm →

Other CWE-23 vulnerabilities

CVE-2026-52813 — Critical (CVSS 10.0): Gogs is an open source self-hosted Git service. Prior to 0.14.3, organization names containing path traversal sequences…
CVE-2026-8326 — Critical (CVSS 10.0): Path traversal vulnerability in Remote Spark (https://www.Remotespark.Com/) SparkView allows reading and writing…
CVE-2026-33494 — Critical (CVSS 10.0): ORY Oathkeeper is an Identity & Access Proxy (IAP) and Access Control Decision API that authorizes HTTP requests based…
CVE-2023-3941 — Critical (CVSS 10.0): Relative Path Traversal vulnerability in ZkTeco-based OEM devices allows an attacker to write any file on the system…
CVE-2024-24578 — Critical (CVSS 10.0): RaspberryMatic is an open-source operating system for HomeMatic internet-of-things devices. RaspberryMatic / OCCU prior…
CVE-2012-6069 — Critical (CVSS 10.0): The CoDeSys Runtime Toolkit’s file transfer functionality does not perform input validation, which allows an…

Browse all CWE-23 vulnerabilities →