CVE-2026-102805

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 6.5 from GitHub Security Advisory published 2026-09-30. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-89536 (ENISA EUVD) · GHSA-cc6h-2fmv-w53q (GitHub Security Advisories)Source: ENISA EUVD

6.5EG
EchelonGraph verdictPlan mitigationNo fix is confirmed yet: check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.5Exploit: No code on recordExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

The CVE record's description, written by its CNA (VulDB), states the affected versions: "A flaw has been found in Nothings stb up to 1.16." No release containing a fix is confirmed on record.

A flaw has been found in Nothings stb up to 1.16. This affects the function stbi_write_png_to_mem/stbi_write_jpg_core/stbi_write_tga_core in the library stb_image_write.h of the component Image Encoding. Executing a manipulation can lead to integer overflow. The attack can be executed remotely. The exploit has been published and may be used.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
60
EG Risk 60/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.
EPSS PROB
0.3%
EPSS %ILE
28th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-29). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 30, 2026

Last Modified

October 1, 2026

Advisory Details (3)

Auto-updated Sep 30, 2026
No fix on record yet.
Web page

GitHub - nothings/stb: stb single-file public domain libraries for C/C++ · GitHub

https://github.com/nothings/stb/
Web page

[SECURITY] Integer overflow in stb_image_write.h leads to heap buffer overflow in PNG encoding and out-of-bounds reads in JPEG/TGA encoding · Issue #1964 · nothings/stb · GitHub

https://github.com/nothings/stb/issues/1964#issuecomment-5404606996
Web page

[SECURITY] Integer overflow in stb_image_write.h leads to heap buffer overflow in PNG encoding and out-of-bounds reads in JPEG/TGA encoding · Issue #1964 · nothings/stb · GitHub

https://github.com/nothings/stb/issues/1964

Vendor Advisories for CVE-2026-102805(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libstb0.0~git20220908.8b5f1f3+ds-1 ... 0.0~git20250907.fede005+ds-1 (8 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libstb0.0~git20241109.5c20573+ds-1, 0.0~git20250907.fede005+ds-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libstb0.0~git20241109.5c20573+ds-1, 0.0~git20250907.fede005+ds-1
  • every version on: no fix on record
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 57× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  2. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  3. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  4. 2026-10-30 03:32 UTCEG score recompute
  5. 2026-10-30 03:32 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  6. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  7. 2026-10-29 14:49 UTCEG score recompute
  8. 2026-10-29 14:49 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  9. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  10. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  11. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  12. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  13. 2026-10-25 14:56 UTCEG score recompute
  14. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  15. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  16. 2026-10-23 09:28 UTCEG score recompute
  17. 2026-10-23 09:28 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  18. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  19. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  20. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  21. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  22. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  23. 2026-10-18 05:10 UTCEG score recompute
  24. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  25. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.3% · 26th percentile
Show 50 more
  1. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  2. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  3. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  4. 2026-10-12 16:40 UTCEG score recompute
  5. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  6. 2026-10-12 02:21 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  7. 2026-10-11 20:16 UTCEG score recompute
  8. 2026-10-11 18:28 UTCEG score recompute
  9. 2026-10-11 15:01 UTCEG score recompute
  10. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  11. 2026-10-11 01:23 UTCEG score recompute
  12. 2026-10-11 01:23 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  13. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  14. 2026-10-10 00:18 UTCEG score recompute
  15. 2026-10-10 00:18 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  16. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  17. 2026-10-08 23:20 UTCEG score recompute
  18. 2026-10-08 23:20 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  19. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  20. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  21. 2026-10-07 22:23 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  22. 2026-10-06 21:26 UTCEG score recompute
  23. 2026-10-06 21:26 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  24. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  25. 2026-10-05 20:29 UTCEG score recompute
  26. 2026-10-05 20:29 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  27. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  28. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  29. 2026-10-04 19:33 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  30. 2026-10-03 18:36 UTCEG score recompute
  31. 2026-10-03 18:35 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  32. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  33. 2026-10-02 17:34 UTCEG score recompute
  34. 2026-10-02 17:34 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  35. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  36. 2026-10-01 16:37 UTCEG score recompute
  37. 2026-10-01 16:36 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  38. 2026-10-01 16:24 UTCNVD updateCVSS v4 → 5.5
  39. 2026-10-01 15:56 UTCEG score recompute
  40. 2026-10-01 15:56 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  41. 2026-10-01 15:55 UTCMITRE cvelistV5CVSS v4 → 6.9
  42. 2026-10-01 15:33 UTCEG score recompute
  43. 2026-10-01 15:33 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  44. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  45. 2026-09-30 14:30 UTCEG score recompute
  46. 2026-09-30 14:30 UTCGHSA enrichmentGHSA-cc6h-2fmv-w53q · GitHub CVSS 6.5
  47. 2026-09-30 01:30 UTCEG score recompute
  48. 2026-09-30 01:29 UTCNVD updateCVSS v4 → 5.5
  49. 2026-09-30 00:35 UTCEG score recomputeFirst assessed: 6.5 MEDIUM
  50. 2026-09-30 00:34 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-102805?
CVE-2026-102805 is a medium-severity vulnerability; its CVE record was published on September 30, 2026. A flaw has been found in Nothings stb up to 1.16. This affects the function stbi_write_png_to_mem/stbi_write_jpg_core/stbi_write_tga_core in the library stb_image_write.h of the component Image Encoding. Executing a manipulation can lead to integer overflow. The attack can be executed remotely. The…
When was the CVE record for CVE-2026-102805 published?
The CVE record for CVE-2026-102805 was published on September 30, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 1, 2026; the record at its source may have been updated since.
Is CVE-2026-102805 actively exploited?
CVE-2026-102805 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (28th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-102805?
CVE-2026-102805 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-102805?
No fix for CVE-2026-102805 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's description, written by its CNA (VulDB), states the affected versions: "A flaw has been found in Nothings stb up to 1.16." No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-102805 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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