Skip to content
Noroxi
CVE-2024-8480· NVD / CVE Program· CNA Wordfence

Image Optimizer, Resizer and CDN – Sirv <= 7.2.7 - Missing Authorization to Authenticated (Contributor+) Arbitrary File Upload

The Image Optimizer, Resizer and CDN – Sirv plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'sirv_save_prevented_sizes' function in all versions up to, and including, 7.2.7. This makes it possible for authenticated attackers, with Contributor-level access and above, to exploit the 'sirv_upload_file_by_chunks_callback' function, which lacks proper file type validation, allowing attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

HighCVSS 8.8 · v3.1—No exploit No fix recorded
Published
Sep 6, 2024
Updated
Jun 17, 2026
EPSS
0.9% · 57th percentile
Follow this CVE

Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.9%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
8.8
CNA · Wordfence
8.8
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
sirvsirv

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • sirv sirvbefore 7.2.8

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Wordfence). Independent of NVD's CPE analysis and usually ahead of it.

  • sirv Image Optimizer, Resizer and CDN – Sirv

    • up to and including 7.2.7affected · semver

Same product

sirv: all records

Other highest-scoring records for the same primary product.

  • CVE-2016-10950The sirv plugin before 1.3.2 for WordPress has SQL injection via the id parameter.
    36Monitor
  • CVE-2024-5853Image Optimizer, Resizer and CDN – Sirv <= 7.2.6 - Authenticated (Contributor+) Arbitrary File Upload
    35Monitor
  • CVE-2024-32959WordPress Sirv plugin <= 7.2.2 - Arbitrary Option Update to Privilege Escalation vulnerability
    35Monitor
  • CVE-2023-50898WordPress Image Optimizer, Resizer and CDN – Sirv plugin <= 7.1.2 - Broken Access Control vulnerability
    35Monitor
  • CVE-2024-27950WordPress Sirv plugin <= 7.2.0 - Broken Access Control vulnerability
    35Monitor
  • CVE-2024-10855Image Optimizer, Resizer and CDN – Sirv <= 7.3.0 - Missing Authorization to Authenticated (Contributor+) Arbitrary Option Deletion
    32Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2023-50898175 days apartWordPress Image Optimizer, Resizer and CDN – Sirv plugin <= 7.1.2 - Broken Access Control vulnerability
    35Monitor
  • CVE-2024-27950189 days apartWordPress Sirv plugin <= 7.2.0 - Broken Access Control vulnerability
    35Monitor
  • CVE-2024-639257 days apartImage Optimizer, Resizer and CDN – Sirv <= 7.2.7 - Authenticated(Subscriber+) Missing Authorization to Plugin Settings Update
    21Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-862 · Missing Authorization

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records